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https://issues.apache.org/jira/browse/IMPALA-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-1034:
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Issue Type: Test (was: Bug)
> Verify RSS stays within mem_limit + JVM heapsize
> ------------------------------------------------
>
> Key: IMPALA-1034
> URL: https://issues.apache.org/jira/browse/IMPALA-1034
> Project: IMPALA
> Issue Type: Test
> Components: Backend
> Affects Versions: Impala 1.3.1
> Reporter: Alan Choi
> Assignee: Tim Armstrong
> Priority: Major
> Labels: resource-management
>
> Releasing the memory in the maintenance thread is insufficient because
> 1) the default wake up time is 30sec, which is too long and
> 2) there's some overhead that we can't even free.
> Although the mem tracker is already tracking all the mem usage by tcmalloc,
> we still see cases where the RSS memory exceed mem-limit. This leads to
> excessive swapping.
> One potential fix is to move away from tcmalloc.
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