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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19138) Rare failure in TestLruBlockCache
Date Tue, 31 Oct 2017 18:38:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16227296#comment-16227296
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Andrew Purtell commented on HBASE-19138:
----------------------------------------

Passes 100 of 100 iterations, now. Would fail previously. 

> Rare failure in TestLruBlockCache
> ---------------------------------
>
>                 Key: HBASE-19138
>                 URL: https://issues.apache.org/jira/browse/HBASE-19138
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Trivial
>             Fix For: 2.0.0, 3.0.0, 1.4.0, 1.5.0
>
>         Attachments: HBASE-19138.patch
>
>
> [ERROR] testCacheEvictionThreadSafe(org.apache.hadoop.hbase.io.hfile.TestLruBlockCache)
Time elapsed: 0.028 s <<< FAILURE!
> java.lang.AssertionError: expected:<0> but was:<1>
> at org.apache.hadoop.hbase.io.hfile.TestLruBlockCache.testCacheEvictionThreadSafe(TestLruBlockCache.java:86)
> Fix for this I think is waiting for the block count to drop to zero after awaiting shutdown
of the executor pool. There's a rare race here. Tests look good using a Waiter predicate so
far, but I haven't finished all 100 iterations yet. 



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