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From "Nicolas Liochon (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-6736) Distributed Split: a split tasks can be mark as DONE but keep unassigned
Date Tue, 15 Oct 2013 09:05:42 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nicolas Liochon resolved HBASE-6736.
------------------------------------

    Resolution: Cannot Reproduce

> Distributed Split: a split tasks can be mark as DONE but keep unassigned
> ------------------------------------------------------------------------
>
>                 Key: HBASE-6736
>                 URL: https://issues.apache.org/jira/browse/HBASE-6736
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.95.2
>            Reporter: Nicolas Liochon
>
> Real cluster, scenario mentioned on HBASE-5843.
> Got it once out of 5 tests on 0.96
> Didn't get it on 0.94 after 3 tests.
> It seems we have a race condition on split logs: the task was nearly simultaneously marked
as done and resubmitted. Then it remained in the unassigned state.
> 2012-09-04 17:27:06,237 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: total tasks
= 1 unassigned = 0
> 2012-09-04 17:27:06,237 INFO org.apache.hadoop.hbase.master.SplitLogManager: resubmitted
1 out of 1 tasks
> 2012-09-04 17:27:06,237 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: task not
yet acquired /hbase/splitlog/hdfs%3A%2F%2FBOX1%3A9000%2Fhbase%2F.logs%2FBOX0%2C60020%2C1346772046399-splitting%2FBOX0%252C60020%252C1346772046399.1346772046609
ver = 7
> 2012-09-04 17:27:06,314 INFO org.apache.hadoop.hbase.master.SplitLogManager: task /hbase/splitlog/RESCAN0000000002
entered state: DONE BOX1,60000,1346771990737
> 2012-09-04 17:27:06,337 DEBUG org.apache.hadoop.hbase.master.SplitLogManager$DeleteAsyncCallback:
deleted /hbase/splitlog/RESCAN0000000002
> 2012-09-04 17:27:06,337 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: deleted
task without in memory state /hbase/splitlog/RESCAN0000000002
> 2012-09-04 17:27:07,226 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: total tasks
= 1 unassigned = 1



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