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From "Vincent Poon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-17328) Properly dispose of looped replication peers
Date Fri, 16 Dec 2016 22:58:58 GMT
Vincent Poon created HBASE-17328:
------------------------------------

             Summary: Properly dispose of looped replication peers
                 Key: HBASE-17328
                 URL: https://issues.apache.org/jira/browse/HBASE-17328
             Project: HBase
          Issue Type: Bug
          Components: Replication
    Affects Versions: 0.98.23, 2.0.0, 1.4.0
            Reporter: Vincent Poon


When adding a looped replication peer (clusterId == peerClusterId), the following code terminates
the replication source thread, but since the source manager still holds a reference, WALs
continue to get enqueued, and never get cleaned because they're stuck in the queue, leading
to an unsustainable buildup.  Furthermore, the replication statistics thread will continue
to print statistics for the terminated source.

{code}
if (clusterId.equals(peerClusterId) && !replicationEndpoint.canReplicateToSameCluster())
{
      this.terminate("ClusterId " + clusterId + " is replicating to itself: peerClusterId
"
          + peerClusterId + " which is not allowed by ReplicationEndpoint:"
          + replicationEndpoint.getClass().getName(), null, false);
    }
{code}



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