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Posted to issues@hbase.apache.org by "Nicolas Liochon (JIRA)" <ji...@apache.org> on 2014/02/27 18:59:19 UTC
[jira] [Commented] (HBASE-10630) NullPointerException in
ConnectionManager$HConnectionImplementation.locateRegionInMeta() due to
missing region info
[ https://issues.apache.org/jira/browse/HBASE-10630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13914798#comment-13914798 ]
Nicolas Liochon commented on HBASE-10630:
-----------------------------------------
+1 for the test. I think we should putbin the message what was null
(location or HRI) to help debugging later.
> NullPointerException in ConnectionManager$HConnectionImplementation.locateRegionInMeta() due to missing region info
> -------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-10630
> URL: https://issues.apache.org/jira/browse/HBASE-10630
> Project: HBase
> Issue Type: Sub-task
> Reporter: Ted Yu
> Assignee: Ted Yu
> Attachments: 10630-v1.txt
>
>
> During Load And Verify With Chaos Monkey test, we observed:
> {code}
> 2014-02-26 16:28:17,964|beaver.machine|INFO|2014-02-26 16:28:17,964 INFO [main] mapreduce.Job: map 71% reduce 0%
> 2014-02-26 16:28:20,073|beaver.machine|INFO|2014-02-26 16:28:20,073 INFO [main] mapreduce.Job: map 82% reduce 0%
> 2014-02-26 16:28:20,077|beaver.machine|INFO|2014-02-26 16:28:20,077 INFO [main] mapreduce.Job: Task Id : attempt_1393409213482_0015_m_000068_0, Status : FAILED
> 2014-02-26 16:28:20,099|beaver.machine|INFO|Error: java.lang.NullPointerException
> 2014-02-26 16:28:20,100|beaver.machine|INFO|at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1175)
> 2014-02-26 16:28:20,100|beaver.machine|INFO|at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1038)
> 2014-02-26 16:28:20,100|beaver.machine|INFO|at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionAll(ConnectionManager.java:986)
> 2014-02-26 16:28:20,101|beaver.machine|INFO|at org.apache.hadoop.hbase.client.AsyncProcess.findDestLocation(AsyncProcess.java:418)
> 2014-02-26 16:28:20,101|beaver.machine|INFO|at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:343)
> 2014-02-26 16:28:20,101|beaver.machine|INFO|at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:296)
> 2014-02-26 16:28:20,102|beaver.machine|INFO|at org.apache.hadoop.hbase.client.HTable.backgroundFlushCommits(HTable.java:1024)
> 2014-02-26 16:28:20,102|beaver.machine|INFO|at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1298)
> 2014-02-26 16:28:20,102|beaver.machine|INFO|at org.apache.hadoop.hbase.test.IntegrationTestLoadAndVerify$LoadMapper.cleanup(IntegrationTestLoadAndVerify.java:188)
> 2014-02-26 16:28:20,102|beaver.machine|INFO|at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:148)
> 2014-02-26 16:28:20,103|beaver.machine|INFO|at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
> 2014-02-26 16:28:20,103|beaver.machine|INFO|at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340)
> 2014-02-26 16:28:20,103|beaver.machine|INFO|at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
> 2014-02-26 16:28:20,103|beaver.machine|INFO|at java.security.AccessController.doPrivileged(Native Method)
> 2014-02-26 16:28:20,104|beaver.machine|INFO|at javax.security.auth.Subject.doAs(Subject.java:396)
> 2014-02-26 16:28:20,104|beaver.machine|INFO|at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
> 2014-02-26 16:28:20,104|beaver.machine|INFO|at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
> 2014-02-26 16:28:20,105|beaver.machine|INFO|
> 2014-02-26 16:28:20,105|beaver.machine|INFO|Container killed by the ApplicationMaster.
> {code}
> Here is related code:
> {code}
> // convert the row result into the HRegionLocation we need!
> location = MetaReader.getRegionLocations(regionInfoRow);
> HRegionInfo regionInfo = location.getRegionLocation().getRegionInfo();
> if (regionInfo == null) {
> throw new IOException("HRegionInfo was null or empty in " +
> {code}
> null check should be performed against location and location.getRegionLocation().
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