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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7531) [replication] NPE in SequenceFileLogReader because ReplicationSource doesn't nullify the reader
Date Tue, 05 Feb 2013 04:00:22 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13570941#comment-13570941
] 

Hudson commented on HBASE-7531:
-------------------------------

Integrated in HBase-0.94-security-on-Hadoop-23 #11 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/11/])
    HBASE-7530  [replication] Work around HDFS-4380 else we get NPEs
HBASE-7531  [replication] NPE in SequenceFileLogReader because
            ReplicationSource doesn't nullify the reader
HBASE-7534  [replication] TestReplication.queueFailover can fail
            because HBaseTestingUtility.createMultiRegions is dangerous (Revision 1431769)

     Result = FAILURE
jdcryans : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSource.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/replication/TestReplication.java

                
> [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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