Method Detail

• preStopRegionServer

  void preStopRegionServer(ObserverContext<RegionServerCoprocessorEnvironment> env)
                           throws IOException

  Called before stopping region server.

  Parameters:

  env - An instance of RegionServerCoprocessorEnvironment

  Throws:

  IOException - Signals that an I/O exception has occurred.

• preMerge

  void preMerge(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
              Region regionA,
              Region regionB)
                throws IOException

  Called before the regions merge. Call ObserverContext.bypass() to skip the merge.

  Parameters:

  ctx -

  regionA -

  regionB -

  Throws:

  IOException - if an error occurred on the coprocessor

  IOException

• postMerge

  void postMerge(ObserverContext<RegionServerCoprocessorEnvironment> c,
               Region regionA,
               Region regionB,
               Region mergedRegion)
                 throws IOException

  called after the regions merge.

  Parameters:

  c -

  regionA -

  regionB -

  mergedRegion -

  Throws:

  IOException

• preMergeCommit

  void preMergeCommit(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                    Region regionA,
                    Region regionB,
                    @MetaMutationAnnotation
                    List<Mutation> metaEntries)
                      throws IOException

  This will be called before PONR step as part of regions merge transaction. Calling ObserverContext.bypass() rollback the merge

  Parameters:

  ctx -

  regionA -

  regionB -

  metaEntries - mutations to execute on hbase:meta atomically with regions merge updates. Any puts or deletes to execute on hbase:meta can be added to the mutations.

  Throws:

  IOException

• postMergeCommit

  void postMergeCommit(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                     Region regionA,
                     Region regionB,
                     Region mergedRegion)
                       throws IOException

  This will be called after PONR step as part of regions merge transaction.

  Parameters:

  ctx -

  regionA -

  regionB -

  mergedRegion -

  Throws:

  IOException

• preRollBackMerge

  void preRollBackMerge(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                      Region regionA,
                      Region regionB)
                        throws IOException

  This will be called before the roll back of the regions merge.

  Parameters:

  ctx -

  regionA -

  regionB -

  Throws:

  IOException

• postRollBackMerge

  void postRollBackMerge(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                       Region regionA,
                       Region regionB)
                         throws IOException

  This will be called after the roll back of the regions merge.

  Parameters:

  ctx -

  regionA -

  regionB -

  Throws:

  IOException

• preRollWALWriterRequest

  void preRollWALWriterRequest(ObserverContext<RegionServerCoprocessorEnvironment> ctx)
                               throws IOException

  This will be called before executing user request to roll a region server WAL.

  Parameters:

  ctx - An instance of ObserverContext

  Throws:

  IOException - Signals that an I/O exception has occurred.

• postRollWALWriterRequest

  void postRollWALWriterRequest(ObserverContext<RegionServerCoprocessorEnvironment> ctx)
                                throws IOException

  This will be called after executing user request to roll a region server WAL.

  Parameters:

  ctx - An instance of ObserverContext

  Throws:

  IOException - Signals that an I/O exception has occurred.

• postCreateReplicationEndPoint

  ReplicationEndpoint postCreateReplicationEndPoint(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                                                  ReplicationEndpoint endpoint)

  This will be called after the replication endpoint is instantiated.

  Parameters:

  ctx -

  endpoint - - the base endpoint for replication

  Returns:

  the endpoint to use during replication.

• preReplicateLogEntries

  void preReplicateLogEntries(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                            List<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry> entries,
                            CellScanner cells)
                              throws IOException

  This will be called before executing replication request to shipping log entries.

  Parameters:

  ctx - An instance of ObserverContext

  entries - list of WALEntries to replicate

  cells - Cells that the WALEntries refer to (if cells is non-null)

  Throws:

  IOException - Signals that an I/O exception has occurred.

• postReplicateLogEntries

  void postReplicateLogEntries(ObserverContext<RegionServerCoprocessorEnvironment> ctx,
                             List<org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry> entries,
                             CellScanner cells)
                               throws IOException

  This will be called after executing replication request to shipping log entries.

  Parameters:

  ctx - An instance of ObserverContext

  entries - list of WALEntries to replicate

  cells - Cells that the WALEntries refer to (if cells is non-null)

  Throws:

  IOException - Signals that an I/O exception has occurred.