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https://issues.apache.org/jira/browse/IMPALA-7118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong reassigned IMPALA-7118:
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Assignee: Tim Armstrong
> Add mem_limit metric listing for all hosts in the profile
> ---------------------------------------------------------
>
> Key: IMPALA-7118
> URL: https://issues.apache.org/jira/browse/IMPALA-7118
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.10.0, Impala 2.12.0
> Reporter: Mala Chikka Kempanna
> Assignee: Tim Armstrong
> Priority: Major
> Labels: observability, ramp-up, supportability
>
> Similar to peak node memory metric in profile like below, we also need a
> metric listing mem_limit set on each node in profile.
> {code:java}
> Per Node Peak Memory Usage: x.y1.com:22000(36.14 GB)
> {code}
>
> Background for this ask is:
> We have seen performance issues reported post-upgrade of impala, where
> cluster admin would have lowered memory limits on all or subset of impala
> daemons while also upgrading the version.
> And query performance suffers if the queries that were running in-memory
> before start spilling now due to lower memory limit.
> And end-users/application-users blame the upgraded version for slowness when
> they share profiles for analysis, not knowing the lowering of memory limits
> for impala by cluster-admins was the reason.
> Having this mem limit metric in profile will help easily spot this issue.
>
>
>
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