[jira] [Created] (HBASE-20624) Race in ReplicationSource which causes walEntryFilter being null when creating new shipper

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

Duo Zhang created HBASE-20624:
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             Summary: Race in ReplicationSource which causes walEntryFilter being null when creating new shipper
                 Key: HBASE-20624
                 URL: https://issues.apache.org/jira/browse/HBASE-20624
             Project: HBase
          Issue Type: Bug
            Reporter: Duo Zhang


We initialize the ReplicationSource in a background thread to avoid blocking the peer modification. And when enqueueLog is called and we want to start a new shipper, we will check whether the replicationEndpoint is initialized, if so, we will start a new shipper. But in the initialize thread, we will initialize walEntryFilter after replicationEndpoint , so it is possible that when we start a new shipper, the walEntryFilter is still null and cause NPE.



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