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https://issues.apache.org/jira/browse/HBASE-4746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13145162#comment-13145162
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Phabricator commented on HBASE-4746:
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mbautin has commented on the revision "[jira] [HBASE-4746] Use a random ZK
client port in unit tests so we can run them in parallel".
Actually, I just found a potential bug that affects command-line invocations
of HMaster -- will upload a new diff shortly. Sorry for so many emails.
REVISION DETAIL
https://reviews.facebook.net/D279
> Use a random ZK client port in unit tests so we can run them in parallel
> ------------------------------------------------------------------------
>
> Key: HBASE-4746
> URL: https://issues.apache.org/jira/browse/HBASE-4746
> Project: HBase
> Issue Type: Improvement
> Reporter: Mikhail Bautin
> Assignee: Mikhail Bautin
> Attachments: 4746-trunk-v2.txt, D255.1.patch, D255.2.patch,
> D279.1.patch, D279.2.patch, D279.3.patch
>
>
> The hard-coded ZK client port has long been a problem for running HBase test
> suite in parallel. The mini ZK cluster should run on a random free port, and
> that port should be passed to all parts of the unit tests that need to talk
> to the mini cluster. In fact, randomizing the port exposes a lot of places in
> the code where a new configuration is instantiated, and as a result the
> client tries to talk to the default ZK client port and times out.
> The initial fix is for 0.89-fb, where it already allows to run unit tests in
> parallel in 10 minutes. A fix for the trunk will follow.
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