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https://issues.apache.org/jira/browse/HBASE-28076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Viraj Jasani resolved HBASE-28076.
----------------------------------
Fix Version/s: 2.6.0
2.4.18
2.5.6
Hadoop Flags: Reviewed
Resolution: Fixed
> NPE on initialization error in RecoveredReplicationSourceShipper
> ----------------------------------------------------------------
>
> Key: HBASE-28076
> URL: https://issues.apache.org/jira/browse/HBASE-28076
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.6.0, 2.4.17, 2.5.5
> Reporter: Istvan Toth
> Assignee: Istvan Toth
> Priority: Minor
> Fix For: 2.6.0, 2.4.18, 2.5.6
>
>
> When we run into problems starting RecoveredReplicationSourceShipper, we try
> to stop the reader thread which we haven't initialized yet, resulting in an
> NPE.
> {noformat}
> ERROR org.apache.hadoop.hbase.replication.regionserver.ReplicationSource:
> Unexpected exception in redacted currentPath=hdfs://redacted
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.replication.regionserver.RecoveredReplicationSourceShipper.terminate(RecoveredReplicationSourceShipper.java:100)
> at
> org.apache.hadoop.hbase.replication.regionserver.RecoveredReplicationSourceShipper.getRecoveredQueueStartPos(RecoveredReplicationSourceShipper.java:87)
> at
> org.apache.hadoop.hbase.replication.regionserver.RecoveredReplicationSourceShipper.getStartPosition(RecoveredReplicationSourceShipper.java:62)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.lambda$tryStartNewShipper$3(ReplicationSource.java:349)
> at
> java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1853)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.tryStartNewShipper(ReplicationSource.java:341)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.initialize(ReplicationSource.java:601)
> at java.lang.Thread.run(Thread.java:750)
> {noformat}
> A simple null check should fix this.
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