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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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Dan Hecht reassigned IMPALA-1034:
---------------------------------
Assignee: Tim Armstrong (was: Dan Hecht)
Summary: Verify RSS stays within mem_limit + JVM heapsize (was: tcmalloc
memory usage exeed mem limit)
[~tarmstrong] only took me a year to notice your comment :) Up to you if
there's something you want to track here. In the meantime I'll rename it to be
about testing RSS, though.
> Verify RSS stays within mem_limit + JVM heapsize
> ------------------------------------------------
>
> Key: IMPALA-1034
> URL: https://issues.apache.org/jira/browse/IMPALA-1034
> Project: IMPALA
> Issue Type: Bug
> 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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