Field Detail

• LOG

  private static final org.apache.commons.logging.Log LOG

• NUM_REGION_GROUPS

  static final String NUM_REGION_GROUPS

  See Also:

  Constant Field Values

• DEFAULT_NUM_REGION_GROUPS

  static final int DEFAULT_NUM_REGION_GROUPS

  See Also:

  Constant Field Values

• delegates

  private WALProvider[] delegates

• counter

  private AtomicInteger counter

Constructor Detail

• BoundedRegionGroupingProvider

  public BoundedRegionGroupingProvider()

Method Detail

• init

  public void init(WALFactory factory,
          org.apache.hadoop.conf.Configuration conf,
          List<WALActionsListener> listeners,
          String providerId)
            throws IOException

  Description copied from interface: WALProvider
  Set up the provider to create wals. will only be called once per instance.

  Specified by:

  init in interface WALProvider

  Overrides:

  init in class RegionGroupingProvider

  Parameters:

  factory - factory that made us may not be null

  conf - may not be null

  listeners - may be null

  providerId - differentiate between providers from one factory. may be null

  Throws:

  IOException

• populateCache

  WALProvider populateCache(byte[] group)

  Description copied from class: RegionGroupingProvider
  Populate the cache for this group.

  Overrides:

  populateCache in class RegionGroupingProvider

• shutdown

  public void shutdown()
                throws IOException

  Description copied from interface: WALProvider
  persist outstanding WALs to storage and stop accepting new appends. This method serves as shorthand for sending a sync to every WAL provided by a given implementation. Those WALs will also stop accepting new writes.

  Specified by:

  shutdown in interface WALProvider

  Overrides:

  shutdown in class RegionGroupingProvider

  Throws:

  IOException

• close

  public void close()
             throws IOException

  Description copied from interface: WALProvider
  shutdown utstanding WALs and clean up any persisted state. Call this method only when you will not need to replay any of the edits to the WALs from this provider. After this call completes, the underlying resources should have been reclaimed.

  Specified by:

  close in interface WALProvider

  Overrides:

  close in class RegionGroupingProvider

  Throws:

  IOException

• getNumLogFiles

  public static long getNumLogFiles(WALFactory walFactory)

  iff the given WALFactory is using the BoundedRegionGroupingProvider for meta and/or non-meta, count the number of files (rolled and active). if either of them isn't, count 0 for that provider.

  Parameters:

  walFactory - may not be null.

• getLogFileSize

  public static long getLogFileSize(WALFactory walFactory)

  iff the given WALFactory is using the BoundedRegionGroupingProvider for meta and/or non-meta, count the size of files (rolled and active). if either of them isn't, count 0 for that provider.

  Parameters:

  walFactory - may not be null.