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https://issues.apache.org/jira/browse/HBASE-14420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14947556#comment-14947556
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stack commented on HBASE-14420:
-------------------------------
Report on last 10 runs of 1.2 hanging tests with 1.7 jvm:
1 Hanging test : org.apache.hadoop.hbase.client.TestShell
1 Hanging test :
org.apache.hadoop.hbase.mapred.TestMultiTableSnapshotInputFormat
1 Hanging test : org.apache.hadoop.hbase.mapred.TestTableMapReduce
1 Hanging test : org.apache.hadoop.hbase.mapred.TestTableSnapshotInputFormat
1 Hanging test : org.apache.hadoop.hbase.mapreduce.TestCopyTable
1 Hanging test :
org.apache.hadoop.hbase.mapreduce.TestImportTSVWithVisibilityLabels
1 Hanging test :
org.apache.hadoop.hbase.mapreduce.TestTableSnapshotInputFormat
2 Hanging test : org.apache.hadoop.hbase.security.access.TestCellACLs
> Zombie Stomping Session
> -----------------------
>
> Key: HBASE-14420
> URL: https://issues.apache.org/jira/browse/HBASE-14420
> Project: HBase
> Issue Type: Umbrella
> Components: test
> Reporter: stack
> Assignee: stack
> Priority: Critical
> Attachments: hangers.txt, none_fix (1).txt, none_fix.txt,
> none_fix.txt, none_fix.txt
>
>
> Patch build are now failing most of the time because we are dropping zombies.
> I confirm we are doing this on non-apache build boxes too.
> Left-over zombies consume resources on build boxes (OOME cannot create native
> threads). Having to do multiple test runs in the hope that we can get a
> non-zombie-making build or making (arbitrary) rulings that the zombies are
> 'not related' is a productivity sink. And so on...
> This is an umbrella issue for a zombie stomping session that started earlier
> this week. Will hang sub-issues of this one. Am running builds back-to-back
> on little cluster to turn out the monsters.
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