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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-7531) [replication] NPE in SequenceFileLogReader because ReplicationSource doesn't nullify the reader
Date Fri, 11 Jan 2013 00:56:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans resolved HBASE-7531.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.94.5
                   0.96.0
     Hadoop Flags: Reviewed

Committed to trunk and 0.94
                
> [replication] NPE in SequenceFileLogReader because ReplicationSource doesn't nullify
the reader
> -----------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7531
>                 URL: https://issues.apache.org/jira/browse/HBASE-7531
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.96.0, 0.94.5
>
>         Attachments: HBASE-7531.patch
>
>
> Here's a NPE I get half the time I run TestReplication:
> {noformat}
> 2012-12-20 08:59:17,259 ERROR [RegionServer:1;192.168.10.135,49168,1356011734418-EventThread.replicationSource,2]
regionserver.ReplicationSource$1(727): Unexpected exception in ReplicationSource, currentPath=hdfs://localhost:65533/user/jdcryans/hbase/.logs/192.168.10.135,49168,1356011734418/192.168.10.135%2C49168%2C1356011734418.1356011956626
> java.lang.NullPointerException
>         at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogReader.seek(SequenceFileLogReader.java:261)
>         at org.apache.hadoop.hbase.replication.regionserver.ReplicationHLogReaderManager.seek(ReplicationHLogReaderManager.java:103)
>         at org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.readAllEntriesToReplicateOrNextFile(ReplicationSource.java:414)
>         at org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.run(ReplicationSource.java:332)
> {noformat}
> The issue happens after an IOE was caught while opening the reader, the issue is that
it isn't set to null after that then the rest of the code assumes the reader is usable.

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