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https://issues.apache.org/jira/browse/HBASE-24001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071084#comment-17071084
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Michael Stack commented on HBASE-24001:
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Looks like Jenkins was restarted earlier:
https://builds.apache.org/label/Hadoop/load-statistics?type=min
Thank you for taking the time to dig in on builds and figure us as the
resource-hog. We still use a bunch but way less now because of your notice.
> The "HBase Nightly" job may exhaust all executors - and create a deadlock
> -------------------------------------------------------------------------
>
> Key: HBASE-24001
> URL: https://issues.apache.org/jira/browse/HBASE-24001
> Project: HBase
> Issue Type: Bug
> Reporter: Zoltan Haindrich
> Priority: Major
>
> What seems to happen is:
> * the job needs more and more executors to run
> * in case there are several of them launched in parallel (different branches)
> say 5
> * they take up all available executors labeled "Hadoop" and then they wait
> for more indefinetly
> I've killed a few builds...see my notes here:
> https://the-asf.slack.com/archives/C7M1AFYLS/p1584442366000900
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