[jira] [Created] (HBASE-8075) HRegion preClose hook is getting called multiple times for single close

["rajeshbabu (JIRA)" <ji...@apache.org>]

rajeshbabu created HBASE-8075:
---------------------------------

             Summary: HRegion preClose hook is getting called multiple times for single close
                 Key: HBASE-8075
                 URL: https://issues.apache.org/jira/browse/HBASE-8075
             Project: HBase
          Issue Type: Bug
          Components: Coprocessors
    Affects Versions: 0.95.0
            Reporter: rajeshbabu
            Assignee: rajeshbabu
             Fix For: 0.98.0, 0.94.7


1) HRegionServer#closeRegion(final RpcController controller,
      final CloseRegionRequest request)
{code}
      // Can be null if we're calling close on a region that's not online
      final HRegion region = this.getFromOnlineRegions(encodedRegionName);
      if ((region  != null) && (region .getCoprocessorHost() != null)) {
        region.getCoprocessorHost().preClose(false);
      }
{code}
2) HRegionServer#closeRegion(String encodedName, final boolean abort,
      final boolean zk, final int versionOfClosingNode, final ServerName sn)
{code}
    if ((actualRegion != null) && (actualRegion.getCoprocessorHost() != null)) {
      try {
        actualRegion.getCoprocessorHost().preClose(false);
      } catch (IOException exp) {
        LOG.warn("Unable to close region: the coprocessor launched an error ", exp);
        return false;
      }
    }
{code}

3) HRegion#  private List<StoreFile> doClose(
      final boolean abort, MonitoredTask status)
{code}
    if (coprocessorHost != null) {
      status.setStatus("Running coprocessor pre-close hooks");
      this.coprocessorHost.preClose(abort);
    }
{code}

IMO 3rd one is enough and remaining two are not needed.

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