Examples of org.apache.hadoop.hbase.regionserver.RegionMergeTransaction

Package org.apache.hadoop.hbase.regionserver

Examples of org.apache.hadoop.hbase.regionserver.RegionMergeTransaction

org.apache.hadoop.hbase.regionserver.RegionMergeTransaction
Executes region merge as a "transaction". It is similar with SplitTransaction. Call {@link #prepare(RegionServerServices)} to setup thetransaction, {@link #execute(Server,RegionServerServices)} to run thetransaction and {@link #rollback(Server,RegionServerServices)} to cleanup ifexecute fails.
Here is an example of how you would use this class:
```
 RegionMergeTransaction mt = new RegionMergeTransaction(this.conf, parent, midKey) if (!mt.prepare(services)) return; try { mt.execute(server, services); } catch (IOException ioe) { try { mt.rollback(server, services); return; } catch (RuntimeException e) { myAbortable.abort("Failed merge, abort"); } } 
```
This class is not thread safe. Caller needs ensure merge is run by one thread only.

      preMergeBeforePONRCalled = true;
      RegionServerCoprocessorEnvironment environment = ctx.getEnvironment();
      HRegionServer rs = (HRegionServer) environment.getRegionServerServices();
      List<HRegion> onlineRegions =
          rs.getOnlineRegions(TableName.valueOf("testRegionServerObserver_2"));
      rmt = new RegionMergeTransaction(onlineRegions.get(0), onlineRegions.get(1), true);
      if (!rmt.prepare(rs)) {
        LOG.error("Prepare for the region merge of table "
            + onlineRegions.get(0).getTableDesc().getNameAsString()
            + " failed. So returning null. ");
        ctx.bypass();

View Full Code Here

      preMergeBeforePONRCalled = true;
      RegionServerCoprocessorEnvironment environment = ctx.getEnvironment();
      HRegionServer rs = (HRegionServer) environment.getRegionServerServices();
      List<HRegion> onlineRegions =
          rs.getOnlineRegions(TableName.valueOf("testRegionServerObserver_2"));
      rmt = new RegionMergeTransaction(onlineRegions.get(0), onlineRegions.get(1), true);
      if (!rmt.prepare(rs)) {
        LOG.error("Prepare for the region merge of table "
            + onlineRegions.get(0).getTableDesc().getNameAsString()
            + " failed. So returning null. ");
        ctx.bypass();

View Full Code Here

      preMergeBeforePONRCalled = true;
      RegionServerCoprocessorEnvironment environment = ctx.getEnvironment();
      HRegionServer rs = (HRegionServer) environment.getRegionServerServices();
      List<HRegion> onlineRegions =
          rs.getOnlineRegions(TableName.valueOf("testRegionServerObserver_2"));
      rmt = new RegionMergeTransaction(onlineRegions.get(0), onlineRegions.get(1), true);
      if (!rmt.prepare(rs)) {
        LOG.error("Prepare for the region merge of table "
            + onlineRegions.get(0).getTableDesc().getNameAsString()
            + " failed. So returning null. ");
        ctx.bypass();

View Full Code Here

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