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https://issues.apache.org/jira/browse/TEZ-3282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309138#comment-15309138
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Hitesh Shah commented on TEZ-3282:
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As a short term fix, this should be okay as long as the flag is set to false
esp. if we are backporting this to 0.8. However, we should convert TEZ-3283 to
just implement the pluggable model and enhance the various options called out
above. Additionally, we may at some point want to bite the bullet and make an
incompatible change to make the default Xmx/Xms calculator more smarter for
larger containers.
> Set the Xms value when Tez computes the heap size for a container
> -----------------------------------------------------------------
>
> Key: TEZ-3282
> URL: https://issues.apache.org/jira/browse/TEZ-3282
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Attachments: TEZ-3282.01.txt
>
>
> Currently, we only set the Xmx value.
> Another useful change would be to change the calculation to not use the
> fraction blindly. For large containers - .e.g 10GB - this ends up leaving 2G
> of the container unused.
> Instead we can add another parameter which indicates the max amount of memory
> to leave outside the heap. Maybe a separate jira for this.
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