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https://issues.apache.org/jira/browse/PIG-4523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai updated PIG-4523:
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Attachment: PIG-4523-1.patch
> Tez engine should use tez config rather than mr config whenever possible
> ------------------------------------------------------------------------
>
> Key: PIG-4523
> URL: https://issues.apache.org/jira/browse/PIG-4523
> Project: Pig
> Issue Type: Bug
> Components: tez
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.15.0
>
> Attachments: PIG-4523-1.patch
>
>
> Currently, Pig on tez use memory/heap setting from MR not tez, but respect
> other tez settings. In the environment which MR and tez settings are not
> aligned, this could be a problem. For a specific scenario, user increase both
> tez both memory settings and io.sort.mb to tune tez performance, but MR
> settings retains. Pig on Tez get increased io.sort.mb but same vertex memory,
> end up with OOM exception.
> I think tez engine shall respect Tez settings first, unless user really want
> to use mr settings for backward compatibility. It can be:
> 1. a flag which turn on the mr settings for tez
> 2. If the mr memory settings are from Pig script not the config file
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