Method Detail

• getOperationTimeout

  int getOperationTimeout()

• abort

  void abort(String why,
           Throwable e)

  Description copied from interface: org.apache.hadoop.hbase.Abortable
  Abort the server or client.

  Specified by:

  abort in interface org.apache.hadoop.hbase.Abortable

  Parameters:

  why - Why we're aborting.

  e - Throwable that caused abort. Can be null.

• isAborted

  boolean isAborted()

  Description copied from interface: org.apache.hadoop.hbase.Abortable
  Check if the server or client was aborted.

  Specified by:

  isAborted in interface org.apache.hadoop.hbase.Abortable

  Returns:

  true if the server or client was aborted, false otherwise

• getConnection

  Connection getConnection()

  Returns:

  Connection used by this object.

• tableExists

  boolean tableExists(TableName tableName)
                      throws IOException

  Parameters:

  tableName - Table to check.

  Returns:

  True if table exists already.

  Throws:

  IOException

• listTables

  HTableDescriptor[] listTables()
                                throws IOException

  List all the userspace tables.

  Returns:

  - returns an array of HTableDescriptors

  Throws:

  IOException - if a remote or network exception occurs

• listTables

  HTableDescriptor[] listTables(Pattern pattern)
                                throws IOException

  List all the userspace tables matching the given pattern.

  Parameters:

  pattern - The compiled regular expression to match against

  Returns:

  - returns an array of HTableDescriptors

  Throws:

  IOException - if a remote or network exception occurs

  See Also:

  listTables()

• listTables

  HTableDescriptor[] listTables(String regex)
                                throws IOException

  List all the userspace tables matching the given regular expression.

  Parameters:

  regex - The regular expression to match against

  Returns:

  - returns an array of HTableDescriptors

  Throws:

  IOException - if a remote or network exception occurs

  See Also:

  listTables(java.util.regex.Pattern)

• listTables

  HTableDescriptor[] listTables(Pattern pattern,
                              boolean includeSysTables)
                                throws IOException

  List all the tables matching the given pattern.

  Parameters:

  pattern - The compiled regular expression to match against

  includeSysTables - False to match only against userspace tables

  Returns:

  - returns an array of HTableDescriptors

  Throws:

  IOException - if a remote or network exception occurs

  See Also:

  listTables()

• listTables

  HTableDescriptor[] listTables(String regex,
                              boolean includeSysTables)
                                throws IOException

  List all the tables matching the given pattern.

  Parameters:

  regex - The regular expression to match against

  includeSysTables - False to match only against userspace tables

  Returns:

  - returns an array of HTableDescriptors

  Throws:

  IOException - if a remote or network exception occurs

  See Also:

  listTables(java.util.regex.Pattern, boolean)

• listTableNames

  TableName[] listTableNames()
                             throws IOException

  List all of the names of userspace tables.

  Returns:

  TableName[] table names

  Throws:

  IOException - if a remote or network exception occurs

• listTableNames

  TableName[] listTableNames(Pattern pattern)
                             throws IOException

  List all of the names of userspace tables.

  Parameters:

  pattern - The regular expression to match against

  Returns:

  TableName[] table names

  Throws:

  IOException - if a remote or network exception occurs

• listTableNames

  TableName[] listTableNames(String regex)
                             throws IOException

  List all of the names of userspace tables.

  Parameters:

  regex - The regular expression to match against

  Returns:

  TableName[] table names

  Throws:

  IOException - if a remote or network exception occurs

• listTableNames

  TableName[] listTableNames(Pattern pattern,
                           boolean includeSysTables)
                             throws IOException

  List all of the names of userspace tables.

  Parameters:

  pattern - The regular expression to match against

  includeSysTables - False to match only against userspace tables

  Returns:

  TableName[] table names

  Throws:

  IOException - if a remote or network exception occurs

• listTableNames

  TableName[] listTableNames(String regex,
                           boolean includeSysTables)
                             throws IOException

  List all of the names of userspace tables.

  Parameters:

  regex - The regular expression to match against

  includeSysTables - False to match only against userspace tables

  Returns:

  TableName[] table names

  Throws:

  IOException - if a remote or network exception occurs

• getTableDescriptor

  HTableDescriptor getTableDescriptor(TableName tableName)
                                      throws TableNotFoundException,
                                             IOException

  Method for getting the tableDescriptor

  Parameters:

  tableName - as a TableName

  Returns:

  the tableDescriptor

  Throws:

  TableNotFoundException

  IOException - if a remote or network exception occurs

• createTable

  void createTable(HTableDescriptor desc)
                   throws IOException

  Creates a new table. Synchronous operation.

  Parameters:

  desc - table descriptor for table

  Throws:

  IllegalArgumentException - if the table name is reserved

  MasterNotRunningException - if master is not running

  TableExistsException - if table already exists (If concurrent threads, the table may have been created between test-for-existence and attempt-at-creation).

  IOException - if a remote or network exception occurs

• createTable

  void createTable(HTableDescriptor desc,
                 byte[] startKey,
                 byte[] endKey,
                 int numRegions)
                   throws IOException

  Creates a new table with the specified number of regions. The start key specified will become the end key of the first region of the table, and the end key specified will become the start key of the last region of the table (the first region has a null start key and the last region has a null end key). BigInteger math will be used to divide the key range specified into enough segments to make the required number of total regions. Synchronous operation.

  Parameters:

  desc - table descriptor for table

  startKey - beginning of key range

  endKey - end of key range

  numRegions - the total number of regions to create

  Throws:

  IllegalArgumentException - if the table name is reserved

  MasterNotRunningException - if master is not running

  TableExistsException - if table already exists (If concurrent threads, the table may have been created between test-for-existence and attempt-at-creation).

  IOException

• createTable

  void createTable(HTableDescriptor desc,
                 byte[][] splitKeys)
                   throws IOException

  Creates a new table with an initial set of empty regions defined by the specified split keys. The total number of regions created will be the number of split keys plus one. Synchronous operation. Note : Avoid passing empty split key.

  Parameters:

  desc - table descriptor for table

  splitKeys - array of split keys for the initial regions of the table

  Throws:

  IllegalArgumentException - if the table name is reserved, if the split keys are repeated and if the split key has empty byte array.

  MasterNotRunningException - if master is not running

  TableExistsException - if table already exists (If concurrent threads, the table may have been created between test-for-existence and attempt-at-creation).

  IOException

• createTableAsync

  void createTableAsync(HTableDescriptor desc,
                      byte[][] splitKeys)
                        throws IOException

  Creates a new table but does not block and wait for it to come online. Asynchronous operation. To check if the table exists, use isTableAvailable(org.apache.hadoop.hbase.TableName) -- it is not safe to create an HTable instance to this table before it is available. Note : Avoid passing empty split key. Throws IllegalArgumentException Bad table name, if the split keys are repeated and if the split key has empty byte array.

  Parameters:

  desc - table descriptor for table

  Throws:

  MasterNotRunningException - if master is not running

  TableExistsException - if table already exists (If concurrent threads, the table may have been created between test-for-existence and attempt-at-creation).

  IOException - if a remote or network exception occurs

• deleteTable

  void deleteTable(TableName tableName)
                   throws IOException

  Deletes a table. Synchronous operation.

  Parameters:

  tableName - name of table to delete

  Throws:

  IOException - if a remote or network exception occurs

• deleteTables

  HTableDescriptor[] deleteTables(String regex)
                                  throws IOException

  Deletes tables matching the passed in pattern and wait on completion. Warning: Use this method carefully, there is no prompting and the effect is immediate. Consider using listTables(java.lang.String) and deleteTable(org.apache.hadoop.hbase.TableName)

  Parameters:

  regex - The regular expression to match table names against

  Returns:

  Table descriptors for tables that couldn't be deleted

  Throws:

  IOException

  See Also:

  deleteTables(java.util.regex.Pattern), deleteTable(org.apache.hadoop.hbase.TableName)

• deleteTables

  HTableDescriptor[] deleteTables(Pattern pattern)
                                  throws IOException

  Delete tables matching the passed in pattern and wait on completion. Warning: Use this method carefully, there is no prompting and the effect is immediate. Consider using listTables(java.util.regex.Pattern) and deleteTable(org.apache.hadoop.hbase.TableName)

  Parameters:

  pattern - The pattern to match table names against

  Returns:

  Table descriptors for tables that couldn't be deleted

  Throws:

  IOException

• truncateTable

  void truncateTable(TableName tableName,
                   boolean preserveSplits)
                     throws IOException

  Truncate a table. Synchronous operation.

  Parameters:

  tableName - name of table to truncate

  preserveSplits - True if the splits should be preserved

  Throws:

  IOException - if a remote or network exception occurs

• enableTable

  void enableTable(TableName tableName)
                   throws IOException

  Enable a table. May timeout. Use enableTableAsync(org.apache.hadoop.hbase.TableName) and isTableEnabled(org.apache.hadoop.hbase.TableName) instead. The table has to be in disabled state for it to be enabled.

  Parameters:

  tableName - name of the table

  Throws:

  IOException - if a remote or network exception occurs There could be couple types of IOException TableNotFoundException means the table doesn't exist. TableNotDisabledException means the table isn't in disabled state.

  See Also:

  isTableEnabled(org.apache.hadoop.hbase.TableName), disableTable(org.apache.hadoop.hbase.TableName), enableTableAsync(org.apache.hadoop.hbase.TableName)

• enableTableAsync

  void enableTableAsync(TableName tableName)
                        throws IOException

  Brings a table on-line (enables it). Method returns immediately though enable of table may take some time to complete, especially if the table is large (All regions are opened as part of enabling process). Check isTableEnabled(org.apache.hadoop.hbase.TableName) to learn when table is fully online. If table is taking too long to online, check server logs.

  Parameters:

  tableName -

  Throws:

  IOException

  Since:

  0.90.0

• enableTables

  HTableDescriptor[] enableTables(String regex)
                                  throws IOException

  Enable tables matching the passed in pattern and wait on completion. Warning: Use this method carefully, there is no prompting and the effect is immediate. Consider using listTables(java.lang.String) and enableTable(org.apache.hadoop.hbase.TableName)

  Parameters:

  regex - The regular expression to match table names against

  Throws:

  IOException

  See Also:

  enableTables(java.util.regex.Pattern), enableTable(org.apache.hadoop.hbase.TableName)

• enableTables

  HTableDescriptor[] enableTables(Pattern pattern)
                                  throws IOException

  Enable tables matching the passed in pattern and wait on completion. Warning: Use this method carefully, there is no prompting and the effect is immediate. Consider using listTables(java.util.regex.Pattern) and enableTable(org.apache.hadoop.hbase.TableName)

  Parameters:

  pattern - The pattern to match table names against

  Throws:

  IOException

• disableTableAsync

  void disableTableAsync(TableName tableName)
                         throws IOException

  Starts the disable of a table. If it is being served, the master will tell the servers to stop serving it. This method returns immediately. The disable of a table can take some time if the table is large (all regions are closed as part of table disable operation). Call isTableDisabled(org.apache.hadoop.hbase.TableName) to check for when disable completes. If table is taking too long to online, check server logs.

  Parameters:

  tableName - name of table

  Throws:

  IOException - if a remote or network exception occurs

  Since:

  0.90.0

  See Also:

  isTableDisabled(org.apache.hadoop.hbase.TableName), isTableEnabled(org.apache.hadoop.hbase.TableName)

• disableTable

  void disableTable(TableName tableName)
                    throws IOException

  Disable table and wait on completion. May timeout eventually. Use disableTableAsync(org.apache.hadoop.hbase.TableName) and isTableDisabled(org.apache.hadoop.hbase.TableName) instead. The table has to be in enabled state for it to be disabled.

  Parameters:

  tableName -

  Throws:

  IOException - There could be couple types of IOException TableNotFoundException means the table doesn't exist. TableNotEnabledException means the table isn't in enabled state.

• disableTables

  HTableDescriptor[] disableTables(String regex)
                                   throws IOException

  Disable tables matching the passed in pattern and wait on completion. Warning: Use this method carefully, there is no prompting and the effect is immediate. Consider using listTables(java.lang.String) and disableTable(org.apache.hadoop.hbase.TableName)

  Parameters:

  regex - The regular expression to match table names against

  Returns:

  Table descriptors for tables that couldn't be disabled

  Throws:

  IOException

  See Also:

  disableTables(java.util.regex.Pattern), disableTable(org.apache.hadoop.hbase.TableName)

• disableTables

  HTableDescriptor[] disableTables(Pattern pattern)
                                   throws IOException

  Disable tables matching the passed in pattern and wait on completion. Warning: Use this method carefully, there is no prompting and the effect is immediate. Consider using listTables(java.util.regex.Pattern) and disableTable(org.apache.hadoop.hbase.TableName)

  Parameters:

  pattern - The pattern to match table names against

  Returns:

  Table descriptors for tables that couldn't be disabled

  Throws:

  IOException

• isTableEnabled

  boolean isTableEnabled(TableName tableName)
                         throws IOException

  Parameters:

  tableName - name of table to check

  Returns:

  true if table is on-line

  Throws:

  IOException - if a remote or network exception occurs

• isTableDisabled

  boolean isTableDisabled(TableName tableName)
                          throws IOException

  Parameters:

  tableName - name of table to check

  Returns:

  true if table is off-line

  Throws:

  IOException - if a remote or network exception occurs

• isTableAvailable

  boolean isTableAvailable(TableName tableName)
                           throws IOException

  Parameters:

  tableName - name of table to check

  Returns:

  true if all regions of the table are available

  Throws:

  IOException - if a remote or network exception occurs

• isTableAvailable

  boolean isTableAvailable(TableName tableName,
                         byte[][] splitKeys)
                           throws IOException

  Use this api to check if the table has been created with the specified number of splitkeys which was used while creating the given table. Note : If this api is used after a table's region gets splitted, the api may return false.

  Parameters:

  tableName - name of table to check

  splitKeys - keys to check if the table has been created with all split keys

  Throws:

  IOException - if a remote or network excpetion occurs

• getAlterStatus

  Pair<Integer,Integer> getAlterStatus(TableName tableName)
                                       throws IOException

  Get the status of alter command - indicates how many regions have received the updated schema Asynchronous operation.

  Parameters:

  tableName - TableName instance

  Returns:

  Pair indicating the number of regions updated Pair.getFirst() is the regions that are yet to be updated Pair.getSecond() is the total number of regions of the table

  Throws:

  IOException - if a remote or network exception occurs

• getAlterStatus

  Pair<Integer,Integer> getAlterStatus(byte[] tableName)
                                       throws IOException

  Get the status of alter command - indicates how many regions have received the updated schema Asynchronous operation.

  Parameters:

  tableName - name of the table to get the status of

  Returns:

  Pair indicating the number of regions updated Pair.getFirst() is the regions that are yet to be updated Pair.getSecond() is the total number of regions of the table

  Throws:

  IOException - if a remote or network exception occurs

• addColumn

  void addColumn(TableName tableName,
               HColumnDescriptor column)
                 throws IOException

  Add a column to an existing table. Asynchronous operation.

  Parameters:

  tableName - name of the table to add column to

  column - column descriptor of column to be added

  Throws:

  IOException - if a remote or network exception occurs

• deleteColumn

  void deleteColumn(TableName tableName,
                  byte[] columnName)
                    throws IOException

  Delete a column from a table. Asynchronous operation.

  Parameters:

  tableName - name of table

  columnName - name of column to be deleted

  Throws:

  IOException - if a remote or network exception occurs

• modifyColumn

  void modifyColumn(TableName tableName,
                  HColumnDescriptor descriptor)
                    throws IOException

  Modify an existing column family on a table. Asynchronous operation.

  Parameters:

  tableName - name of table

  descriptor - new column descriptor to use

  Throws:

  IOException - if a remote or network exception occurs

• closeRegion

  void closeRegion(String regionname,
                 String serverName)
                   throws IOException

  Close a region. For expert-admins. Runs close on the regionserver. The master will not be informed of the close.

  Parameters:

  regionname - region name to close

  serverName - If supplied, we'll use this location rather than the one currently in hbase:meta

  Throws:

  IOException - if a remote or network exception occurs

• closeRegion

  void closeRegion(byte[] regionname,
                 String serverName)
                   throws IOException

  Close a region. For expert-admins Runs close on the regionserver. The master will not be informed of the close.

  Parameters:

  regionname - region name to close

  serverName - The servername of the regionserver. If passed null we will use servername found in the hbase:meta table. A server name is made of host, port and startcode. Here is an example: host187.example.com,60020,1289493121758

  Throws:

  IOException - if a remote or network exception occurs

• closeRegionWithEncodedRegionName

  boolean closeRegionWithEncodedRegionName(String encodedRegionName,
                                         String serverName)
                                           throws IOException

  For expert-admins. Runs close on the regionserver. Closes a region based on the encoded region name. The region server name is mandatory. If the servername is provided then based on the online regions in the specified regionserver the specified region will be closed. The master will not be informed of the close. Note that the regionname is the encoded regionname.

  Parameters:

  encodedRegionName - The encoded region name; i.e. the hash that makes up the region name suffix: e.g. if regionname is TestTable,0094429456,1289497600452.527db22f95c8a9e0116f0cc13c680396., then the encoded region name is: 527db22f95c8a9e0116f0cc13c680396.

  serverName - The servername of the regionserver. A server name is made of host, port and startcode. This is mandatory. Here is an example: host187.example.com,60020,1289493121758

  Returns:

  true if the region was closed, false if not.

  Throws:

  IOException - if a remote or network exception occurs

• closeRegion

  void closeRegion(ServerName sn,
                 HRegionInfo hri)
                   throws IOException

  Close a region. For expert-admins Runs close on the regionserver. The master will not be informed of the close.

  Parameters:

  sn -

  hri -

  Throws:

  IOException

• getOnlineRegions

  List<HRegionInfo> getOnlineRegions(ServerName sn)
                                     throws IOException

  Get all the online regions on a region server.

  Throws:

  IOException

• flush

  void flush(TableName tableName)
             throws IOException

  Flush a table. Synchronous operation.

  Parameters:

  tableName - table to flush

  Throws:

  IOException - if a remote or network exception occurs

• flushRegion

  void flushRegion(byte[] regionName)
                   throws IOException

  Flush an individual region. Synchronous operation.

  Parameters:

  regionName - region to flush

  Throws:

  IOException - if a remote or network exception occurs

• compact

  void compact(TableName tableName)
               throws IOException

  Compact a table. Asynchronous operation.

  Parameters:

  tableName - table to compact

  Throws:

  IOException - if a remote or network exception occurs

• compactRegion

  void compactRegion(byte[] regionName)
                     throws IOException

  Compact an individual region. Asynchronous operation.

  Parameters:

  regionName - region to compact

  Throws:

  IOException - if a remote or network exception occurs

• compact

  void compact(TableName tableName,
             byte[] columnFamily)
               throws IOException

  Compact a column family within a table. Asynchronous operation.

  Parameters:

  tableName - table to compact

  columnFamily - column family within a table

  Throws:

  IOException - if a remote or network exception occurs

• compactRegion

  void compactRegion(byte[] regionName,
                   byte[] columnFamily)
                     throws IOException

  Compact a column family within a region. Asynchronous operation.

  Parameters:

  regionName - region to compact

  columnFamily - column family within a region

  Throws:

  IOException - if a remote or network exception occurs

• majorCompact

  void majorCompact(TableName tableName)
                    throws IOException

  Major compact a table. Asynchronous operation.

  Parameters:

  tableName - table to major compact

  Throws:

  IOException - if a remote or network exception occurs

• majorCompactRegion

  void majorCompactRegion(byte[] regionName)
                          throws IOException

  Major compact a table or an individual region. Asynchronous operation.

  Parameters:

  regionName - region to major compact

  Throws:

  IOException - if a remote or network exception occurs

• majorCompact

  void majorCompact(TableName tableName,
                  byte[] columnFamily)
                    throws IOException

  Major compact a column family within a table. Asynchronous operation.

  Parameters:

  tableName - table to major compact

  columnFamily - column family within a table

  Throws:

  IOException - if a remote or network exception occurs

• majorCompactRegion

  void majorCompactRegion(byte[] regionName,
                        byte[] columnFamily)
                          throws IOException

  Major compact a column family within region. Asynchronous operation.

  Parameters:

  regionName - egion to major compact

  columnFamily - column family within a region

  Throws:

  IOException - if a remote or network exception occurs

• compactRegionServer

  void compactRegionServer(ServerName sn,
                         boolean major)
                           throws IOException,
                                  InterruptedException

  Compact all regions on the region server

  Parameters:

  sn - the region server name

  major - if it's major compaction

  Throws:

  IOException

  InterruptedException

• move

  void move(byte[] encodedRegionName,
          byte[] destServerName)
            throws IOException

  Move the region r to dest.

  Parameters:

  encodedRegionName - The encoded region name; i.e. the hash that makes up the region name suffix: e.g. if regionname is TestTable,0094429456,1289497600452.527db22f95c8a9e0116f0cc13c680396., then the encoded region name is: 527db22f95c8a9e0116f0cc13c680396.

  destServerName - The servername of the destination regionserver. If passed the empty byte array we'll assign to a random server. A server name is made of host, port and startcode. Here is an example: host187.example.com,60020,1289493121758

  Throws:

  IOException - if we can't find a region named encodedRegionName

• assign

  void assign(byte[] regionName)
              throws IOException

  Parameters:

  regionName - Region name to assign.

  Throws:

  IOException

• unassign

  void unassign(byte[] regionName,
              boolean force)
                throws IOException

  Unassign a region from current hosting regionserver. Region will then be assigned to a regionserver chosen at random. Region could be reassigned back to the same server. Use move(byte[], byte[]) if you want to control the region movement.

  Parameters:

  regionName - Region to unassign. Will clear any existing RegionPlan if one found.

  force - If true, force unassign (Will remove region from regions-in-transition too if present. If results in double assignment use hbck -fix to resolve. To be used by experts).

  Throws:

  IOException

• offline

  void offline(byte[] regionName)
               throws IOException

  Offline specified region from master's in-memory state. It will not attempt to reassign the region as in unassign. This API can be used when a region not served by any region server and still online as per Master's in memory state. If this API is incorrectly used on active region then master will loose track of that region. This is a special method that should be used by experts or hbck.

  Parameters:

  regionName - Region to offline.

  Throws:

  IOException

• setBalancerRunning

  boolean setBalancerRunning(boolean on,
                           boolean synchronous)
                             throws IOException

  Turn the load balancer on or off.

  Parameters:

  synchronous - If true, it waits until current balance() call, if outstanding, to return.

  Returns:

  Previous balancer value

  Throws:

  IOException

• balancer

  boolean balancer()
                   throws IOException

  Invoke the balancer. Will run the balancer and if regions to move, it will go ahead and do the reassignments. Can NOT run for various reasons. Check logs.

  Returns:

  True if balancer ran, false otherwise.

  Throws:

  IOException

• isBalancerEnabled

  boolean isBalancerEnabled()
                            throws IOException

  Query the current state of the balancer

  Returns:

  true if the balancer is enabled, false otherwise.

  Throws:

  IOException

• normalize

  boolean normalize()
                    throws IOException

  Invoke region normalizer. Can NOT run for various reasons. Check logs.

  Returns:

  True if region normalizer ran, false otherwise.

  Throws:

  IOException

• isNormalizerEnabled

  boolean isNormalizerEnabled()
                              throws IOException

  Query the current state of the region normalizer

  Returns:

  true if region normalizer is enabled, false otherwise.

  Throws:

  IOException

• setNormalizerRunning

  boolean setNormalizerRunning(boolean on)
                               throws IOException

  Turn region normalizer on or off.

  Returns:

  Previous normalizer value

  Throws:

  IOException

• enableCatalogJanitor

  boolean enableCatalogJanitor(boolean enable)
                               throws IOException

  Enable/Disable the catalog janitor

  Parameters:

  enable - if true enables the catalog janitor

  Returns:

  the previous state

  Throws:

  IOException

• runCatalogScan

  int runCatalogScan()
                     throws IOException

  Ask for a scan of the catalog table

  Returns:

  the number of entries cleaned

  Throws:

  IOException

• isCatalogJanitorEnabled

  boolean isCatalogJanitorEnabled()
                                  throws IOException

  Query on the catalog janitor state (Enabled/Disabled?)

  Throws:

  IOException

• mergeRegions

  void mergeRegions(byte[] nameOfRegionA,
                  byte[] nameOfRegionB,
                  boolean forcible)
                    throws IOException

  Merge two regions. Asynchronous operation.

  Parameters:

  nameOfRegionA - encoded or full name of region a

  nameOfRegionB - encoded or full name of region b

  forcible - true if do a compulsory merge, otherwise we will only merge two adjacent regions

  Throws:

  IOException

• split

  void split(TableName tableName)
             throws IOException

  Split a table. Asynchronous operation.

  Parameters:

  tableName - table to split

  Throws:

  IOException - if a remote or network exception occurs

• splitRegion

  void splitRegion(byte[] regionName)
                   throws IOException

  Split an individual region. Asynchronous operation.

  Parameters:

  regionName - region to split

  Throws:

  IOException - if a remote or network exception occurs

• split

  void split(TableName tableName,
           byte[] splitPoint)
             throws IOException

  Split a table. Asynchronous operation.

  Parameters:

  tableName - table to split

  splitPoint - the explicit position to split on

  Throws:

  IOException - if a remote or network exception occurs

• splitRegion

  void splitRegion(byte[] regionName,
                 byte[] splitPoint)
                   throws IOException

  Split an individual region. Asynchronous operation.

  Parameters:

  regionName - region to split

  splitPoint - the explicit position to split on

  Throws:

  IOException - if a remote or network exception occurs

• modifyTable

  void modifyTable(TableName tableName,
                 HTableDescriptor htd)
                   throws IOException

  Modify an existing table, more IRB friendly version. Asynchronous operation. This means that it may be a while before your schema change is updated across all of the table.

  Parameters:

  tableName - name of table.

  htd - modified description of the table

  Throws:

  IOException - if a remote or network exception occurs

• shutdown

  void shutdown()
                throws IOException

  Shuts down the HBase cluster

  Throws:

  IOException - if a remote or network exception occurs

• stopMaster

  void stopMaster()
                  throws IOException

  Shuts down the current HBase master only. Does not shutdown the cluster.

  Throws:

  IOException - if a remote or network exception occurs

  See Also:

  shutdown()

• stopRegionServer

  void stopRegionServer(String hostnamePort)
                        throws IOException

  Stop the designated regionserver

  Parameters:

  hostnamePort - Hostname and port delimited by a : as in example.org:1234

  Throws:

  IOException - if a remote or network exception occurs

• getClusterStatus

  ClusterStatus getClusterStatus()
                                 throws IOException

  Returns:

  cluster status

  Throws:

  IOException - if a remote or network exception occurs

• getConfiguration

  org.apache.hadoop.conf.Configuration getConfiguration()

  Returns:

  Configuration used by the instance.

• createNamespace

  void createNamespace(NamespaceDescriptor descriptor)
                       throws IOException

  Create a new namespace

  Parameters:

  descriptor - descriptor which describes the new namespace

  Throws:

  IOException

• modifyNamespace

  void modifyNamespace(NamespaceDescriptor descriptor)
                       throws IOException

  Modify an existing namespace

  Parameters:

  descriptor - descriptor which describes the new namespace

  Throws:

  IOException

• deleteNamespace

  void deleteNamespace(String name)
                       throws IOException

  Delete an existing namespace. Only empty namespaces (no tables) can be removed.

  Parameters:

  name - namespace name

  Throws:

  IOException

• getNamespaceDescriptor

  NamespaceDescriptor getNamespaceDescriptor(String name)
                                             throws IOException

  Get a namespace descriptor by name

  Parameters:

  name - name of namespace descriptor

  Returns:

  A descriptor

  Throws:

  IOException

• listNamespaceDescriptors

  NamespaceDescriptor[] listNamespaceDescriptors()
                                                 throws IOException

  List available namespace descriptors

  Returns:

  List of descriptors

  Throws:

  IOException

• listTableDescriptorsByNamespace

  HTableDescriptor[] listTableDescriptorsByNamespace(String name)
                                                     throws IOException

  Get list of table descriptors by namespace

  Parameters:

  name - namespace name

  Returns:

  A descriptor

  Throws:

  IOException

• listTableNamesByNamespace

  TableName[] listTableNamesByNamespace(String name)
                                        throws IOException

  Get list of table names by namespace

  Parameters:

  name - namespace name

  Returns:

  The list of table names in the namespace

  Throws:

  IOException

• getTableRegions

  List<HRegionInfo> getTableRegions(TableName tableName)
                                    throws IOException

  Get the regions of a given table.

  Parameters:

  tableName - the name of the table

  Returns:

  List of HRegionInfo.

  Throws:

  IOException

• close

  void close()
             throws IOException

  Specified by:

  close in interface AutoCloseable

  Specified by:

  close in interface Closeable

  Throws:

  IOException

• getTableDescriptorsByTableName

  HTableDescriptor[] getTableDescriptorsByTableName(List<TableName> tableNames)
                                                    throws IOException

  Get tableDescriptors

  Parameters:

  tableNames - List of table names

  Returns:

  HTD[] the tableDescriptor

  Throws:

  IOException - if a remote or network exception occurs

• getTableDescriptors

  HTableDescriptor[] getTableDescriptors(List<String> names)
                                         throws IOException

  Get tableDescriptors

  Parameters:

  names - List of table names

  Returns:

  HTD[] the tableDescriptor

  Throws:

  IOException - if a remote or network exception occurs

• abortProcedure

  boolean abortProcedure(long procId,
                       boolean mayInterruptIfRunning)
                         throws IOException

  abort a procedure

  Parameters:

  procId - ID of the procedure to abort

  mayInterruptIfRunning - if the proc completed at least one step, should it be aborted?

  Returns:

  true if aborted, false if procedure already completed or does not exist

  Throws:

  IOException

• listProcedures

  ProcedureInfo[] listProcedures()
                                 throws IOException

  List procedures

  Returns:

  procedure list

  Throws:

  IOException

• abortProcedureAsync

  Future<Boolean> abortProcedureAsync(long procId,
                                    boolean mayInterruptIfRunning)
                                      throws IOException

  Abort a procedure but does not block and wait for it be completely removed. You can use Future.get(long, TimeUnit) to wait on the operation to complete. It may throw ExecutionException if there was an error while executing the operation or TimeoutException in case the wait timeout was not long enough to allow the operation to complete.

  Parameters:

  procId - ID of the procedure to abort

  mayInterruptIfRunning - if the proc completed at least one step, should it be aborted?

  Returns:

  true if aborted, false if procedure already completed or does not exist

  Throws:

  IOException

• rollWALWriter

  void rollWALWriter(ServerName serverName)
                     throws IOException,
                            FailedLogCloseException

  Roll the log writer. I.e. for filesystem based write ahead logs, start writing to a new file. Note that the actual rolling of the log writer is asynchronous and may not be complete when this method returns. As a side effect of this call, the named region server may schedule store flushes at the request of the wal.

  Parameters:

  serverName - The servername of the regionserver.

  Throws:

  IOException - if a remote or network exception occurs

  FailedLogCloseException

• getMasterCoprocessors

  String[] getMasterCoprocessors()
                                 throws IOException

  Helper delegage to getClusterStatus().getMasterCoprocessors().

  Returns:

  an array of master coprocessors

  Throws:

  IOException

  See Also:

  ClusterStatus.getMasterCoprocessors()

• getCompactionState

  org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoResponse.CompactionState getCompactionState(TableName tableName)
                                                                                                                  throws IOException

  Get the current compaction state of a table. It could be in a major compaction, a minor compaction, both, or none.

  Parameters:

  tableName - table to examine

  Returns:

  the current compaction state

  Throws:

  IOException - if a remote or network exception occurs

• getCompactionStateForRegion

  org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetRegionInfoResponse.CompactionState getCompactionStateForRegion(byte[] regionName)
                                                                                                                           throws IOException

  Get the current compaction state of region. It could be in a major compaction, a minor compaction, both, or none.

  Parameters:

  regionName - region to examine

  Returns:

  the current compaction state

  Throws:

  IOException - if a remote or network exception occurs

• getLastMajorCompactionTimestamp

  long getLastMajorCompactionTimestamp(TableName tableName)
                                       throws IOException

  Get the timestamp of the last major compaction for the passed table The timestamp of the oldest HFile resulting from a major compaction of that table, or 0 if no such HFile could be found.

  Parameters:

  tableName - table to examine

  Returns:

  the last major compaction timestamp or 0

  Throws:

  IOException - if a remote or network exception occurs

• getLastMajorCompactionTimestampForRegion

  long getLastMajorCompactionTimestampForRegion(byte[] regionName)
                                                throws IOException

  Get the timestamp of the last major compaction for the passed region. The timestamp of the oldest HFile resulting from a major compaction of that region, or 0 if no such HFile could be found.

  Parameters:

  regionName - region to examine

  Returns:

  the last major compaction timestamp or 0

  Throws:

  IOException - if a remote or network exception occurs

• snapshot

  void snapshot(String snapshotName,
              TableName tableName)
                throws IOException,
                       SnapshotCreationException,
                       IllegalArgumentException

  Take a snapshot for the given table. If the table is enabled, a FLUSH-type snapshot will be taken. If the table is disabled, an offline snapshot is taken. Snapshots are considered unique based on the name of the snapshot. Attempts to take a snapshot with the same name (even a different type or with different parameters) will fail with a SnapshotCreationException indicating the duplicate naming. Snapshot names follow the same naming constraints as tables in HBase. See TableName.isLegalFullyQualifiedTableName(byte[]).

  Parameters:

  snapshotName - name of the snapshot to be created

  tableName - name of the table for which snapshot is created

  Throws:

  IOException - if a remote or network exception occurs

  SnapshotCreationException - if snapshot creation failed

  IllegalArgumentException - if the snapshot request is formatted incorrectly

• snapshot

  void snapshot(byte[] snapshotName,
              TableName tableName)
                throws IOException,
                       SnapshotCreationException,
                       IllegalArgumentException

  public void snapshot(final String snapshotName, Create a timestamp consistent snapshot for the given table. final byte[] tableName) throws IOException, Snapshots are considered unique based on the name of the snapshot. Attempts to take a snapshot with the same name (even a different type or with different parameters) will fail with a SnapshotCreationException indicating the duplicate naming. Snapshot names follow the same naming constraints as tables in HBase.

  Parameters:

  snapshotName - name of the snapshot to be created

  tableName - name of the table for which snapshot is created

  Throws:

  IOException - if a remote or network exception occurs

  SnapshotCreationException - if snapshot creation failed

  IllegalArgumentException - if the snapshot request is formatted incorrectly

• snapshot

  void snapshot(String snapshotName,
              TableName tableName,
              org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription.Type type)
                throws IOException,
                       SnapshotCreationException,
                       IllegalArgumentException

  Create typed snapshot of the table. Snapshots are considered unique based on the name of the snapshot. Attempts to take a snapshot with the same name (even a different type or with different parameters) will fail with a SnapshotCreationException indicating the duplicate naming. Snapshot names follow the same naming constraints as tables in HBase. See TableName.isLegalFullyQualifiedTableName(byte[]).

  Parameters:

  snapshotName - name to give the snapshot on the filesystem. Must be unique from all other snapshots stored on the cluster

  tableName - name of the table to snapshot

  type - type of snapshot to take

  Throws:

  IOException - we fail to reach the master

  SnapshotCreationException - if snapshot creation failed

  IllegalArgumentException - if the snapshot request is formatted incorrectly

• snapshot

  void snapshot(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription snapshot)
                throws IOException,
                       SnapshotCreationException,
                       IllegalArgumentException

  Take a snapshot and wait for the server to complete that snapshot (blocking). Only a single snapshot should be taken at a time for an instance of HBase, or results may be undefined (you can tell multiple HBase clusters to snapshot at the same time, but only one at a time for a single cluster). Snapshots are considered unique based on the name of the snapshot. Attempts to take a snapshot with the same name (even a different type or with different parameters) will fail with a SnapshotCreationException indicating the duplicate naming. Snapshot names follow the same naming constraints as tables in HBase. See TableName.isLegalFullyQualifiedTableName(byte[]). You should probably use snapshot(String, org.apache.hadoop.hbase.TableName) or snapshot(byte[], org.apache.hadoop.hbase.TableName) unless you are sure about the type of snapshot that you want to take.

  Parameters:

  snapshot - snapshot to take

  Throws:

  IOException - or we lose contact with the master.

  SnapshotCreationException - if snapshot failed to be taken

  IllegalArgumentException - if the snapshot request is formatted incorrectly

• takeSnapshotAsync

  org.apache.hadoop.hbase.protobuf.generated.MasterProtos.SnapshotResponse takeSnapshotAsync(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription snapshot)
                                                                                             throws IOException,
                                                                                                    SnapshotCreationException

  Take a snapshot without waiting for the server to complete that snapshot (asynchronous) Only a single snapshot should be taken at a time, or results may be undefined.

  Parameters:

  snapshot - snapshot to take

  Returns:

  response from the server indicating the max time to wait for the snapshot

  Throws:

  IOException - if the snapshot did not succeed or we lose contact with the master.

  SnapshotCreationException - if snapshot creation failed

  IllegalArgumentException - if the snapshot request is formatted incorrectly

• isSnapshotFinished

  boolean isSnapshotFinished(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription snapshot)
                             throws IOException,
                                    HBaseSnapshotException,
                                    UnknownSnapshotException

  Check the current state of the passed snapshot. There are three possible states:

  1. running - returns false
  2. finished - returns true
  3. finished with error - throws the exception that caused the snapshot to fail

  The cluster only knows about the most recent snapshot. Therefore, if another snapshot has been run/started since the snapshot your are checking, you will recieve an UnknownSnapshotException.

  Parameters:

  snapshot - description of the snapshot to check

  Returns:

  true if the snapshot is completed, false if the snapshot is still running

  Throws:

  IOException - if we have a network issue

  HBaseSnapshotException - if the snapshot failed

  UnknownSnapshotException - if the requested snapshot is unknown

• restoreSnapshot

  void restoreSnapshot(byte[] snapshotName)
                       throws IOException,
                              RestoreSnapshotException

  Restore the specified snapshot on the original table. (The table must be disabled) If the "hbase.snapshot.restore.take.failsafe.snapshot" configuration property is set to true, a snapshot of the current table is taken before executing the restore operation. In case of restore failure, the failsafe snapshot will be restored. If the restore completes without problem the failsafe snapshot is deleted.

  Parameters:

  snapshotName - name of the snapshot to restore

  Throws:

  IOException - if a remote or network exception occurs

  RestoreSnapshotException - if snapshot failed to be restored

  IllegalArgumentException - if the restore request is formatted incorrectly

• restoreSnapshot

  void restoreSnapshot(String snapshotName)
                       throws IOException,
                              RestoreSnapshotException

  Restore the specified snapshot on the original table. (The table must be disabled) If the "hbase.snapshot.restore.take.failsafe.snapshot" configuration property is set to true, a snapshot of the current table is taken before executing the restore operation. In case of restore failure, the failsafe snapshot will be restored. If the restore completes without problem the failsafe snapshot is deleted.

  Parameters:

  snapshotName - name of the snapshot to restore

  Throws:

  IOException - if a remote or network exception occurs

  RestoreSnapshotException - if snapshot failed to be restored

  IllegalArgumentException - if the restore request is formatted incorrectly

• restoreSnapshot

  void restoreSnapshot(byte[] snapshotName,
                     boolean takeFailSafeSnapshot)
                       throws IOException,
                              RestoreSnapshotException

  Restore the specified snapshot on the original table. (The table must be disabled) If 'takeFailSafeSnapshot' is set to true, a snapshot of the current table is taken before executing the restore operation. In case of restore failure, the failsafe snapshot will be restored. If the restore completes without problem the failsafe snapshot is deleted. The failsafe snapshot name is configurable by using the property "hbase.snapshot.restore.failsafe.name".

  Parameters:

  snapshotName - name of the snapshot to restore

  takeFailSafeSnapshot - true if the failsafe snapshot should be taken

  Throws:

  IOException - if a remote or network exception occurs

  RestoreSnapshotException - if snapshot failed to be restored

  IllegalArgumentException - if the restore request is formatted incorrectly

• restoreSnapshot

  void restoreSnapshot(String snapshotName,
                     boolean takeFailSafeSnapshot)
                       throws IOException,
                              RestoreSnapshotException

  Restore the specified snapshot on the original table. (The table must be disabled) If 'takeFailSafeSnapshot' is set to true, a snapshot of the current table is taken before executing the restore operation. In case of restore failure, the failsafe snapshot will be restored. If the restore completes without problem the failsafe snapshot is deleted. The failsafe snapshot name is configurable by using the property "hbase.snapshot.restore.failsafe.name".

  Parameters:

  snapshotName - name of the snapshot to restore

  takeFailSafeSnapshot - true if the failsafe snapshot should be taken

  Throws:

  IOException - if a remote or network exception occurs

  RestoreSnapshotException - if snapshot failed to be restored

  IllegalArgumentException - if the restore request is formatted incorrectly

• cloneSnapshot

  void cloneSnapshot(byte[] snapshotName,
                   TableName tableName)
                     throws IOException,
                            TableExistsException,
                            RestoreSnapshotException

  Create a new table by cloning the snapshot content.

  Parameters:

  snapshotName - name of the snapshot to be cloned

  tableName - name of the table where the snapshot will be restored

  Throws:

  IOException - if a remote or network exception occurs

  TableExistsException - if table to be created already exists

  RestoreSnapshotException - if snapshot failed to be cloned

  IllegalArgumentException - if the specified table has not a valid name

• cloneSnapshot

  void cloneSnapshot(String snapshotName,
                   TableName tableName)
                     throws IOException,
                            TableExistsException,
                            RestoreSnapshotException

  Create a new table by cloning the snapshot content.

  Parameters:

  snapshotName - name of the snapshot to be cloned

  tableName - name of the table where the snapshot will be restored

  Throws:

  IOException - if a remote or network exception occurs

  TableExistsException - if table to be created already exists

  RestoreSnapshotException - if snapshot failed to be cloned

  IllegalArgumentException - if the specified table has not a valid name

• execProcedure

  void execProcedure(String signature,
                   String instance,
                   Map<String,String> props)
                     throws IOException

  Execute a distributed procedure on a cluster.

  Parameters:

  signature - A distributed procedure is uniquely identified by its signature (default the root ZK node name of the procedure).

  instance - The instance name of the procedure. For some procedures, this parameter is optional.

  props - Property/Value pairs of properties passing to the procedure

  Throws:

  IOException

• execProcedureWithRet

  byte[] execProcedureWithRet(String signature,
                            String instance,
                            Map<String,String> props)
                              throws IOException

  Execute a distributed procedure on a cluster.

  Parameters:

  signature - A distributed procedure is uniquely identified by its signature (default the root ZK node name of the procedure).

  instance - The instance name of the procedure. For some procedures, this parameter is optional.

  props - Property/Value pairs of properties passing to the procedure

  Returns:

  data returned after procedure execution. null if no return data.

  Throws:

  IOException

• isProcedureFinished

  boolean isProcedureFinished(String signature,
                            String instance,
                            Map<String,String> props)
                              throws IOException

  Check the current state of the specified procedure. There are three possible states:

  1. running - returns false
  2. finished - returns true
  3. finished with error - throws the exception that caused the procedure to fail

  Parameters:

  signature - The signature that uniquely identifies a procedure

  instance - The instance name of the procedure

  props - Property/Value pairs of properties passing to the procedure

  Returns:

  true if the specified procedure is finished successfully, false if it is still running

  Throws:

  IOException - if the specified procedure finished with error

• listSnapshots

  List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription> listSnapshots()
                                                                                                 throws IOException

  List completed snapshots.

  Returns:

  a list of snapshot descriptors for completed snapshots

  Throws:

  IOException - if a network error occurs

• listSnapshots

  List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription> listSnapshots(String regex)
                                                                                                 throws IOException

  List all the completed snapshots matching the given regular expression.

  Parameters:

  regex - The regular expression to match against

  Returns:

  - returns a List of SnapshotDescription

  Throws:

  IOException - if a remote or network exception occurs

• listSnapshots

  List<org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription> listSnapshots(Pattern pattern)
                                                                                                 throws IOException

  List all the completed snapshots matching the given pattern.

  Parameters:

  pattern - The compiled regular expression to match against

  Returns:

  - returns a List of SnapshotDescription

  Throws:

  IOException - if a remote or network exception occurs

• deleteSnapshot

  void deleteSnapshot(byte[] snapshotName)
                      throws IOException

  Delete an existing snapshot.

  Parameters:

  snapshotName - name of the snapshot

  Throws:

  IOException - if a remote or network exception occurs

• deleteSnapshot

  void deleteSnapshot(String snapshotName)
                      throws IOException

  Delete an existing snapshot.

  Parameters:

  snapshotName - name of the snapshot

  Throws:

  IOException - if a remote or network exception occurs

• deleteSnapshots

  void deleteSnapshots(String regex)
                       throws IOException

  Delete existing snapshots whose names match the pattern passed.

  Parameters:

  regex - The regular expression to match against

  Throws:

  IOException - if a remote or network exception occurs

• deleteSnapshots

  void deleteSnapshots(Pattern pattern)
                       throws IOException

  Delete existing snapshots whose names match the pattern passed.

  Parameters:

  pattern - pattern for names of the snapshot to match

  Throws:

  IOException - if a remote or network exception occurs

• setQuota

  void setQuota(QuotaSettings quota)
                throws IOException

  Apply the new quota settings.

  Parameters:

  quota - the quota settings

  Throws:

  IOException - if a remote or network exception occurs

• getQuotaRetriever

  QuotaRetriever getQuotaRetriever(QuotaFilter filter)
                                   throws IOException

  Return a QuotaRetriever to list the quotas based on the filter.

  Parameters:

  filter - the quota settings filter

  Returns:

  the quota retriever

  Throws:

  IOException - if a remote or network exception occurs

• coprocessorService

  CoprocessorRpcChannel coprocessorService()

  Creates and returns a RpcChannel instance connected to the active master.

  The obtained RpcChannel instance can be used to access a published coprocessor Service using standard protobuf service invocations:

   CoprocessorRpcChannel channel = myAdmin.coprocessorService();
   MyService.BlockingInterface service = MyService.newBlockingStub(channel);
   MyCallRequest request = MyCallRequest.newBuilder()
       ...
       .build();
   MyCallResponse response = service.myCall(null, request);
   

  Returns:

  A MasterCoprocessorRpcChannel instance

• coprocessorService

  CoprocessorRpcChannel coprocessorService(ServerName sn)

  Creates and returns a RpcChannel instance connected to the passed region server.

  The obtained RpcChannel instance can be used to access a published coprocessor Service using standard protobuf service invocations:

   CoprocessorRpcChannel channel = myAdmin.coprocessorService(serverName);
   MyService.BlockingInterface service = MyService.newBlockingStub(channel);
   MyCallRequest request = MyCallRequest.newBuilder()
       ...
       .build();
   MyCallResponse response = service.myCall(null, request);
   

  Parameters:

  sn - the server name to which the endpoint call is made

  Returns:

  A RegionServerCoprocessorRpcChannel instance

• updateConfiguration

  void updateConfiguration(ServerName server)
                           throws IOException

  Update the configuration and trigger an online config change on the regionserver

  Parameters:

  server - : The server whose config needs to be updated.

  Throws:

  IOException

• updateConfiguration

  void updateConfiguration()
                           throws IOException

  Update the configuration and trigger an online config change on all the regionservers

  Throws:

  IOException

• getMasterInfoPort

  int getMasterInfoPort()
                        throws IOException

  Get the info port of the current master if one is available.

  Returns:

  master info port

  Throws:

  IOException

• getSecurityCapabilities

  List<SecurityCapability> getSecurityCapabilities()
                                                   throws IOException

  Return the set of supported security capabilities.

  Throws:

  IOException

  UnsupportedOperationException