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https://issues.apache.org/jira/browse/IMPALA-10193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17203335#comment-17203335
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Tim Armstrong commented on IMPALA-10193:
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[~fifteencai] are you intending to work on this yourself? I just added you as a
contributor to the IMPALA JIRA project so you can assign it to yourself.
Maybe we can leverage IMPALA-7940? Impala daemons can already detect the docker
memory limit. If mem_limit is set to a % value, then the impalad mem_limit will
be that % of the container memory limit.
> Limit the memory usage of the whole mini-cluster
> ------------------------------------------------
>
> Key: IMPALA-10193
> URL: https://issues.apache.org/jira/browse/IMPALA-10193
> Project: IMPALA
> Issue Type: Bug
> Components: Infrastructure
> Affects Versions: Impala 3.4.0
> Reporter: Fifteen
> Priority: Minor
> Attachments: image-2020-09-28-17-18-15-358.png
>
>
> The mini-cluster contains 3 virtual nodes, and all of them runs in a single
> 'Machine'. By quoting, it implies the machine can be a docker container. If
> the container is started with `-priviledged` and the actual memory is limited
> by CGROUPS, then the total memory in `top` and the actual available memory
> can be different!
>
> For example, in the container below, `top` tells us the total memory is
> 128GB, while the total memory set in CGROUPS is actually 32GB. If the acutal
> mem usage exceeds 32GB, process (such as impalad, hivemaster2 etc.) get
> killed.
> !image-2020-09-28-17-18-15-358.png!
>
> So we may need a way to limit the whole mini-cluster's memory usage.
>
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