org.apache.hadoop.hbase.coprocessor
Class BaseMasterObserver

java.lang.Object
  org.apache.hadoop.hbase.coprocessor.BaseMasterObserver

All Implemented Interfaces:

Coprocessor, MasterObserver

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class BaseMasterObserver
extends Object
implements MasterObserver

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.Coprocessor

Coprocessor.State

Field Summary

Fields inherited from interface org.apache.hadoop.hbase.Coprocessor

PRIORITY_HIGHEST, PRIORITY_LOWEST, PRIORITY_SYSTEM, PRIORITY_USER, VERSION

Constructor Summary

BaseMasterObserver()

Method Summary

void	postAddColumn(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor column) Called after the new column family has been created.
void	postAddColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor column) Called after the new column family has been created.
void	postAssign(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo regionInfo) Called after the region assignment has been requested.
void	postBalance(ObserverContext<MasterCoprocessorEnvironment> ctx, List<RegionPlan> plans) Called after the balancing plan has been submitted.
void	postBalanceSwitch(ObserverContext<MasterCoprocessorEnvironment> ctx, boolean oldValue, boolean newValue) Called after the flag to enable/disable balancing has changed.
void	postCloneSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot, HTableDescriptor hTableDescriptor) Called after a snapshot clone operation has been requested.
void	postCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx, HTableDescriptor desc, HRegionInfo[] regions) Called after the createTable operation has been requested.
void	postCreateTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, HTableDescriptor desc, HRegionInfo[] regions) Called after the createTable operation has been requested.
void	postDeleteColumn(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, byte[] c) Called after the column family has been deleted.
void	postDeleteColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, byte[] c) Called after the column family has been deleted.
void	postDeleteSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot) Called after the delete snapshot operation has been requested.
void	postDeleteTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called after the deleteTable operation has been requested.
void	postDeleteTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called after HMaster deletes a table.
void	postDisableTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called after the disableTable operation has been requested.
void	postDisableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called after the disableTable operation has been requested.
void	postEnableTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called after the enableTable operation has been requested.
void	postEnableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called after the enableTable operation has been requested.
void	postModifyColumn(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor descriptor) Called after the column family has been updated.
void	postModifyColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor descriptor) Called after the column family has been updated.
void	postModifyTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HTableDescriptor htd) Called after the modifyTable operation has been requested.
void	postModifyTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HTableDescriptor htd) Called after to modifying a table's properties.
void	postMove(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo region, ServerName srcServer, ServerName destServer) Called after the region move has been requested.
void	postRegionOffline(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo regionInfo) Called after the region has been marked offline.
void	postRestoreSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot, HTableDescriptor hTableDescriptor) Called after a snapshot restore operation has been requested.
void	postSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot, HTableDescriptor hTableDescriptor) Called after the snapshot operation has been requested.
void	postStartMaster(ObserverContext<MasterCoprocessorEnvironment> ctx) Called immediately after an active master instance has completed initialization.
void	postUnassign(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo regionInfo, boolean force) Called after the region unassignment has been requested.
void	preAddColumn(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor column) Called prior to adding a new column family to the table.
void	preAddColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor column) Called prior to adding a new column family to the table.
void	preAssign(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo regionInfo) Called prior to assigning a specific region.
void	preBalance(ObserverContext<MasterCoprocessorEnvironment> ctx) Called prior to requesting rebalancing of the cluster regions, though after the initial checks for regions in transition and the balance switch flag.
boolean	preBalanceSwitch(ObserverContext<MasterCoprocessorEnvironment> ctx, boolean b) Called prior to modifying the flag used to enable/disable region balancing.
void	preCloneSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot, HTableDescriptor hTableDescriptor) Called before a snapshot is cloned.
void	preCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx, HTableDescriptor desc, HRegionInfo[] regions) Called before a new table is created by HMaster.
void	preCreateTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, HTableDescriptor desc, HRegionInfo[] regions) Called before a new table is created by HMaster.
void	preDeleteColumn(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, byte[] c) Called prior to deleting the entire column family.
void	preDeleteColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, byte[] c) Called prior to deleting the entire column family.
void	preDeleteSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot) Called before a snapshot is deleted.
void	preDeleteTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called before HMaster deletes a table.
void	preDeleteTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called before HMaster deletes a table.
void	preDisableTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called prior to disabling a table.
void	preDisableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called prior to disabling a table.
void	preEnableTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called prior to enabling a table.
void	preEnableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName) Called prior to enabling a table.
void	preModifyColumn(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor descriptor) Called prior to modifying a column family's attributes.
void	preModifyColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HColumnDescriptor descriptor) Called prior to modifying a column family's attributes.
void	preModifyTable(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HTableDescriptor htd) Called prior to modifying a table's properties.
void	preModifyTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx, byte[] tableName, HTableDescriptor htd) Called prior to modifying a table's properties.
void	preMove(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo region, ServerName srcServer, ServerName destServer) Called prior to moving a given region from one region server to another.
void	preRegionOffline(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo regionInfo) Called prior to marking a given region as offline.
void	preRestoreSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot, HTableDescriptor hTableDescriptor) Called before a snapshot is restored.
void	preShutdown(ObserverContext<MasterCoprocessorEnvironment> ctx) Called prior to shutting down the full HBase cluster, including this HMaster process.
void	preSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx, HBaseProtos.SnapshotDescription snapshot, HTableDescriptor hTableDescriptor) Called before a new snapshot is taken.
void	preStopMaster(ObserverContext<MasterCoprocessorEnvironment> ctx) Called immediately prior to stopping this HMaster process.
void	preUnassign(ObserverContext<MasterCoprocessorEnvironment> ctx, HRegionInfo regionInfo, boolean force) Called prior to unassigning a given region.
void	start(CoprocessorEnvironment ctx)
void	stop(CoprocessorEnvironment ctx)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BaseMasterObserver

public BaseMasterObserver()

Method Detail

preCreateTable

public void preCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                           HTableDescriptor desc,
                           HRegionInfo[] regions)
                    throws IOException

Description copied from interface: MasterObserver

Called before a new table is created by HMaster. Called as part of create table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preCreateTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

desc - the HTableDescriptor for the table

regions - the initial regions created for the table

Throws:

IOException

postCreateTable

public void postCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            HTableDescriptor desc,
                            HRegionInfo[] regions)
                     throws IOException

Description copied from interface: MasterObserver

Called after the createTable operation has been requested. Called as part of create table RPC call.

Specified by:

postCreateTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

desc - the HTableDescriptor for the table

regions - the initial regions created for the table

Throws:

IOException

preCreateTableHandler

public void preCreateTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                  HTableDescriptor desc,
                                  HRegionInfo[] regions)
                           throws IOException

Description copied from interface: MasterObserver

Called before a new table is created by HMaster. Called as part of create table handler and it is async to the create RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preCreateTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

desc - the HTableDescriptor for the table

regions - the initial regions created for the table

Throws:

IOException

postCreateTableHandler

public void postCreateTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   HTableDescriptor desc,
                                   HRegionInfo[] regions)
                            throws IOException

Description copied from interface: MasterObserver

Called after the createTable operation has been requested. Called as part of create table RPC call. Called as part of create table handler and it is async to the create RPC call.

Specified by:

postCreateTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

desc - the HTableDescriptor for the table

regions - the initial regions created for the table

Throws:

IOException

preDeleteTable

public void preDeleteTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                           byte[] tableName)
                    throws IOException

Description copied from interface: MasterObserver

Called before HMaster deletes a table. Called as part of delete table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preDeleteTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

postDeleteTable

public void postDeleteTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            byte[] tableName)
                     throws IOException

Description copied from interface: MasterObserver

Called after the deleteTable operation has been requested. Called as part of delete table RPC call.

Specified by:

postDeleteTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

preDeleteTableHandler

public void preDeleteTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                  byte[] tableName)
                           throws IOException

Description copied from interface: MasterObserver

Called before HMaster deletes a table. Called as part of delete table handler and it is async to the delete RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preDeleteTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

postDeleteTableHandler

public void postDeleteTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   byte[] tableName)
                            throws IOException

Description copied from interface: MasterObserver

Called after HMaster deletes a table. Called as part of delete table handler and it is async to the delete RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

postDeleteTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

preModifyTable

public void preModifyTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                           byte[] tableName,
                           HTableDescriptor htd)
                    throws IOException

Description copied from interface: MasterObserver

Called prior to modifying a table's properties. Called as part of modify table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preModifyTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

htd - the HTableDescriptor

Throws:

IOException

postModifyTableHandler

public void postModifyTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   byte[] tableName,
                                   HTableDescriptor htd)
                            throws IOException

Description copied from interface: MasterObserver

Called after to modifying a table's properties. Called as part of modify table handler and it is async to the modify table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

postModifyTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

htd - the HTableDescriptor

Throws:

IOException

preModifyTableHandler

public void preModifyTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                  byte[] tableName,
                                  HTableDescriptor htd)
                           throws IOException

Description copied from interface: MasterObserver

Called prior to modifying a table's properties. Called as part of modify table handler and it is async to the modify table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preModifyTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

htd - the HTableDescriptor

Throws:

IOException

postModifyTable

public void postModifyTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            byte[] tableName,
                            HTableDescriptor htd)
                     throws IOException

Description copied from interface: MasterObserver

Called after the modifyTable operation has been requested. Called as part of modify table RPC call.

Specified by:

postModifyTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

htd - the HTableDescriptor

Throws:

IOException

preAddColumn

public void preAddColumn(ObserverContext<MasterCoprocessorEnvironment> ctx,
                         byte[] tableName,
                         HColumnDescriptor column)
                  throws IOException

Description copied from interface: MasterObserver

Called prior to adding a new column family to the table. Called as part of add column RPC call.

Specified by:

preAddColumn in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

column - the HColumnDescriptor

Throws:

IOException

postAddColumn

public void postAddColumn(ObserverContext<MasterCoprocessorEnvironment> ctx,
                          byte[] tableName,
                          HColumnDescriptor column)
                   throws IOException

Description copied from interface: MasterObserver

Called after the new column family has been created. Called as part of add column RPC call.

Specified by:

postAddColumn in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

column - the HColumnDescriptor

Throws:

IOException

preAddColumnHandler

public void preAddColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                byte[] tableName,
                                HColumnDescriptor column)
                         throws IOException

Description copied from interface: MasterObserver

Called prior to adding a new column family to the table. Called as part of add column handler.

Specified by:

preAddColumnHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

column - the HColumnDescriptor

Throws:

IOException

postAddColumnHandler

public void postAddColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                 byte[] tableName,
                                 HColumnDescriptor column)
                          throws IOException

Description copied from interface: MasterObserver

Called after the new column family has been created. Called as part of add column handler.

Specified by:

postAddColumnHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

column - the HColumnDescriptor

Throws:

IOException

preModifyColumn

public void preModifyColumn(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            byte[] tableName,
                            HColumnDescriptor descriptor)
                     throws IOException

Description copied from interface: MasterObserver

Called prior to modifying a column family's attributes. Called as part of modify column RPC call.

Specified by:

preModifyColumn in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

descriptor - the HColumnDescriptor

Throws:

IOException

postModifyColumn

public void postModifyColumn(ObserverContext<MasterCoprocessorEnvironment> ctx,
                             byte[] tableName,
                             HColumnDescriptor descriptor)
                      throws IOException

Description copied from interface: MasterObserver

Called after the column family has been updated. Called as part of modify column RPC call.

Specified by:

postModifyColumn in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

descriptor - the HColumnDescriptor

Throws:

IOException

preModifyColumnHandler

public void preModifyColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   byte[] tableName,
                                   HColumnDescriptor descriptor)
                            throws IOException

Description copied from interface: MasterObserver

Called prior to modifying a column family's attributes. Called as part of modify column handler.

Specified by:

preModifyColumnHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

descriptor - the HColumnDescriptor

Throws:

IOException

postModifyColumnHandler

public void postModifyColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                    byte[] tableName,
                                    HColumnDescriptor descriptor)
                             throws IOException

Description copied from interface: MasterObserver

Called after the column family has been updated. Called as part of modify column handler.

Specified by:

postModifyColumnHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

descriptor - the HColumnDescriptor

Throws:

IOException

preDeleteColumn

public void preDeleteColumn(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            byte[] tableName,
                            byte[] c)
                     throws IOException

Description copied from interface: MasterObserver

Called prior to deleting the entire column family. Called as part of delete column RPC call.

Specified by:

preDeleteColumn in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

c - the column

Throws:

IOException

postDeleteColumn

public void postDeleteColumn(ObserverContext<MasterCoprocessorEnvironment> ctx,
                             byte[] tableName,
                             byte[] c)
                      throws IOException

Description copied from interface: MasterObserver

Called after the column family has been deleted. Called as part of delete column RPC call.

Specified by:

postDeleteColumn in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

c - the column

Throws:

IOException

preDeleteColumnHandler

public void preDeleteColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   byte[] tableName,
                                   byte[] c)
                            throws IOException

Description copied from interface: MasterObserver

Called prior to deleting the entire column family. Called as part of delete column handler.

Specified by:

preDeleteColumnHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

c - the column

Throws:

IOException

postDeleteColumnHandler

public void postDeleteColumnHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                    byte[] tableName,
                                    byte[] c)
                             throws IOException

Description copied from interface: MasterObserver

Called after the column family has been deleted. Called as part of delete column handler.

Specified by:

postDeleteColumnHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

c - the column

Throws:

IOException

preEnableTable

public void preEnableTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                           byte[] tableName)
                    throws IOException

Description copied from interface: MasterObserver

Called prior to enabling a table. Called as part of enable table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preEnableTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

postEnableTable

public void postEnableTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            byte[] tableName)
                     throws IOException

Description copied from interface: MasterObserver

Called after the enableTable operation has been requested. Called as part of enable table RPC call.

Specified by:

postEnableTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

preEnableTableHandler

public void preEnableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                  byte[] tableName)
                           throws IOException

Description copied from interface: MasterObserver

Called prior to enabling a table. Called as part of enable table handler and it is async to the enable table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preEnableTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

postEnableTableHandler

public void postEnableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   byte[] tableName)
                            throws IOException

Description copied from interface: MasterObserver

Called after the enableTable operation has been requested. Called as part of enable table handler and it is async to the enable table RPC call.

Specified by:

postEnableTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

preDisableTable

public void preDisableTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                            byte[] tableName)
                     throws IOException

Description copied from interface: MasterObserver

Called prior to disabling a table. Called as part of disable table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preDisableTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

postDisableTable

public void postDisableTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
                             byte[] tableName)
                      throws IOException

Description copied from interface: MasterObserver

Called after the disableTable operation has been requested. Called as part of disable table RPC call.

Specified by:

postDisableTable in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

preDisableTableHandler

public void preDisableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                   byte[] tableName)
                            throws IOException

Description copied from interface: MasterObserver

Called prior to disabling a table. Called as part of disable table handler and it is asyn to the disable table RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preDisableTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

postDisableTableHandler

public void postDisableTableHandler(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                    byte[] tableName)
                             throws IOException

Description copied from interface: MasterObserver

Called after the disableTable operation has been requested. Called as part of disable table handler and it is asyn to the disable table RPC call.

Specified by:

postDisableTableHandler in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

tableName - the name of the table

Throws:

IOException

preAssign

public void preAssign(ObserverContext<MasterCoprocessorEnvironment> ctx,
                      HRegionInfo regionInfo)
               throws IOException

Description copied from interface: MasterObserver

Called prior to assigning a specific region.

Specified by:

preAssign in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

regionInfo - the regionInfo of the region

Throws:

IOException

postAssign

public void postAssign(ObserverContext<MasterCoprocessorEnvironment> ctx,
                       HRegionInfo regionInfo)
                throws IOException

Description copied from interface: MasterObserver

Called after the region assignment has been requested.

Specified by:

postAssign in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

regionInfo - the regionInfo of the region

Throws:

IOException

preUnassign

public void preUnassign(ObserverContext<MasterCoprocessorEnvironment> ctx,
                        HRegionInfo regionInfo,
                        boolean force)
                 throws IOException

Description copied from interface: MasterObserver

Called prior to unassigning a given region.

Specified by:

preUnassign in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

force - whether to force unassignment or not

Throws:

IOException

postUnassign

public void postUnassign(ObserverContext<MasterCoprocessorEnvironment> ctx,
                         HRegionInfo regionInfo,
                         boolean force)
                  throws IOException

Description copied from interface: MasterObserver

Called after the region unassignment has been requested.

Specified by:

postUnassign in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

force - whether to force unassignment or not

Throws:

IOException

preRegionOffline

public void preRegionOffline(ObserverContext<MasterCoprocessorEnvironment> ctx,
                             HRegionInfo regionInfo)
                      throws IOException

Description copied from interface: MasterObserver

Called prior to marking a given region as offline. ctx.bypass() will not have any impact on this hook.

Specified by:

preRegionOffline in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

Throws:

IOException

postRegionOffline

public void postRegionOffline(ObserverContext<MasterCoprocessorEnvironment> ctx,
                              HRegionInfo regionInfo)
                       throws IOException

Description copied from interface: MasterObserver

Called after the region has been marked offline.

Specified by:

postRegionOffline in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

Throws:

IOException

preBalance

public void preBalance(ObserverContext<MasterCoprocessorEnvironment> ctx)
                throws IOException

Description copied from interface: MasterObserver

Called prior to requesting rebalancing of the cluster regions, though after the initial checks for regions in transition and the balance switch flag.

Specified by:

preBalance in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

Throws:

IOException

postBalance

public void postBalance(ObserverContext<MasterCoprocessorEnvironment> ctx,
                        List<RegionPlan> plans)
                 throws IOException

Description copied from interface: MasterObserver

Called after the balancing plan has been submitted.

Specified by:

postBalance in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

plans - the RegionPlans which master has executed. RegionPlan serves as hint as for the final destination for the underlying region but may not represent the final state of assignment

Throws:

IOException

preBalanceSwitch

public boolean preBalanceSwitch(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                boolean b)
                         throws IOException

Description copied from interface: MasterObserver

Called prior to modifying the flag used to enable/disable region balancing.

Specified by:

preBalanceSwitch in interface MasterObserver

Parameters:

ctx - the coprocessor instance's environment

b - the new flag value submitted in the call

Throws:

IOException

postBalanceSwitch

public void postBalanceSwitch(ObserverContext<MasterCoprocessorEnvironment> ctx,
                              boolean oldValue,
                              boolean newValue)
                       throws IOException

Description copied from interface: MasterObserver

Called after the flag to enable/disable balancing has changed.

Specified by:

postBalanceSwitch in interface MasterObserver

Parameters:

ctx - the coprocessor instance's environment

oldValue - the previously set balanceSwitch value

newValue - the newly set balanceSwitch value

Throws:

IOException

preShutdown

public void preShutdown(ObserverContext<MasterCoprocessorEnvironment> ctx)
                 throws IOException

Description copied from interface: MasterObserver

Called prior to shutting down the full HBase cluster, including this HMaster process.

Specified by:

preShutdown in interface MasterObserver

Throws:

IOException

preStopMaster

public void preStopMaster(ObserverContext<MasterCoprocessorEnvironment> ctx)
                   throws IOException

Description copied from interface: MasterObserver

Called immediately prior to stopping this HMaster process.

Specified by:

preStopMaster in interface MasterObserver

Throws:

IOException

postStartMaster

public void postStartMaster(ObserverContext<MasterCoprocessorEnvironment> ctx)
                     throws IOException

Description copied from interface: MasterObserver

Called immediately after an active master instance has completed initialization. Will not be called on standby master instances unless they take over the active role.

Specified by:

postStartMaster in interface MasterObserver

Throws:

IOException

start

public void start(CoprocessorEnvironment ctx)
           throws IOException

Specified by:

start in interface Coprocessor

Throws:

IOException

stop

public void stop(CoprocessorEnvironment ctx)
          throws IOException

Specified by:

stop in interface Coprocessor

Throws:

IOException

preMove

public void preMove(ObserverContext<MasterCoprocessorEnvironment> ctx,
                    HRegionInfo region,
                    ServerName srcServer,
                    ServerName destServer)
             throws IOException

Description copied from interface: MasterObserver

Called prior to moving a given region from one region server to another.

Specified by:

preMove in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

region - the HRegionInfo

srcServer - the source ServerName

destServer - the destination ServerName

Throws:

IOException

postMove

public void postMove(ObserverContext<MasterCoprocessorEnvironment> ctx,
                     HRegionInfo region,
                     ServerName srcServer,
                     ServerName destServer)
              throws IOException

Description copied from interface: MasterObserver

Called after the region move has been requested.

Specified by:

postMove in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

region - the HRegionInfo

srcServer - the source ServerName

destServer - the destination ServerName

Throws:

IOException

preSnapshot

public void preSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                        HBaseProtos.SnapshotDescription snapshot,
                        HTableDescriptor hTableDescriptor)
                 throws IOException

Description copied from interface: MasterObserver

Called before a new snapshot is taken. Called as part of snapshot RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor for the snapshot

hTableDescriptor - the hTableDescriptor of the table to snapshot

Throws:

IOException

postSnapshot

public void postSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                         HBaseProtos.SnapshotDescription snapshot,
                         HTableDescriptor hTableDescriptor)
                  throws IOException

Description copied from interface: MasterObserver

Called after the snapshot operation has been requested. Called as part of snapshot RPC call.

Specified by:

postSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor for the snapshot

hTableDescriptor - the hTableDescriptor of the table to snapshot

Throws:

IOException

preCloneSnapshot

public void preCloneSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                             HBaseProtos.SnapshotDescription snapshot,
                             HTableDescriptor hTableDescriptor)
                      throws IOException

Description copied from interface: MasterObserver

Called before a snapshot is cloned. Called as part of restoreSnapshot RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preCloneSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor for the snapshot

hTableDescriptor - the hTableDescriptor of the table to create

Throws:

IOException

postCloneSnapshot

public void postCloneSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                              HBaseProtos.SnapshotDescription snapshot,
                              HTableDescriptor hTableDescriptor)
                       throws IOException

Description copied from interface: MasterObserver

Called after a snapshot clone operation has been requested. Called as part of restoreSnapshot RPC call.

Specified by:

postCloneSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor for the snapshot

hTableDescriptor - the hTableDescriptor of the table to create

Throws:

IOException

preRestoreSnapshot

public void preRestoreSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                               HBaseProtos.SnapshotDescription snapshot,
                               HTableDescriptor hTableDescriptor)
                        throws IOException

Description copied from interface: MasterObserver

Called before a snapshot is restored. Called as part of restoreSnapshot RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preRestoreSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor for the snapshot

hTableDescriptor - the hTableDescriptor of the table to restore

Throws:

IOException

postRestoreSnapshot

public void postRestoreSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                                HBaseProtos.SnapshotDescription snapshot,
                                HTableDescriptor hTableDescriptor)
                         throws IOException

Description copied from interface: MasterObserver

Called after a snapshot restore operation has been requested. Called as part of restoreSnapshot RPC call.

Specified by:

postRestoreSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor for the snapshot

hTableDescriptor - the hTableDescriptor of the table to restore

Throws:

IOException

preDeleteSnapshot

public void preDeleteSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                              HBaseProtos.SnapshotDescription snapshot)
                       throws IOException

Description copied from interface: MasterObserver

Called before a snapshot is deleted. Called as part of deleteSnapshot RPC call. It can't bypass the default action, e.g., ctx.bypass() won't have effect.

Specified by:

preDeleteSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor of the snapshot to delete

Throws:

IOException

postDeleteSnapshot

public void postDeleteSnapshot(ObserverContext<MasterCoprocessorEnvironment> ctx,
                               HBaseProtos.SnapshotDescription snapshot)
                        throws IOException

Description copied from interface: MasterObserver

Called after the delete snapshot operation has been requested. Called as part of deleteSnapshot RPC call.

Specified by:

postDeleteSnapshot in interface MasterObserver

Parameters:

ctx - the environment to interact with the framework and master

snapshot - the SnapshotDescriptor of the snapshot to delete

Throws:

IOException