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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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