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https://issues.apache.org/jira/browse/HBASE-14222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14965941#comment-14965941
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stack commented on HBASE-14222:
-------------------------------
Failed with this:
java.lang.RuntimeException: The forked VM terminated without properly saying
goodbye. VM crash or System.exit called?
I'm trying to figure which tests are failing as per the above...
Unrelated most likely. Let me retry.
> Improve DrainBarrier
> --------------------
>
> Key: HBASE-14222
> URL: https://issues.apache.org/jira/browse/HBASE-14222
> Project: HBase
> Issue Type: Bug
> Components: util
> Reporter: Hiroshi Ikeda
> Assignee: Hiroshi Ikeda
> Priority: Minor
> Attachments: HBASE-14222-V2.patch, HBASE-14222-V2.patch,
> HBASE-14222-V2.patch, HBASE-14222.patch
>
>
> 1. {{DrainBarrier.stopAndDrainOps}} may wait forever if
> {{DrainBarrier.endOp}} changes its state and calls {{Object.notifyAll}} just
> before {{stopAndDrainOps}} enters the synchronized block to call
> {{Object.wait}}. Moreover, {{Object.wait}} may wake up false-positively, and
> {{stopAndDrainOps}} may break the block before outstanding operations are
> complete.
> 2. Some tests for {{DrainBarrier}} catch and ignore {{AssertionError}}
> explicitly thrown JUnit's {{fail}} method.
> The implementation of {{DrainBarrier}} is a little complex, and I'll fix and
> refactor it.
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