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https://issues.apache.org/jira/browse/TEZ-4141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17086001#comment-17086001
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Mustafa Iman commented on TEZ-4141:
-----------------------------------
This patch only bases the task configuration from the local config instead of
an empty one. Yes you can unset something set in local xml file but I dont
understand how config can carry over from task to task.
> Let Input/Output Processors load local xml configs
> --------------------------------------------------
>
> Key: TEZ-4141
> URL: https://issues.apache.org/jira/browse/TEZ-4141
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Mustafa Iman
> Assignee: Mustafa Iman
> Priority: Major
> Attachments: TEZ-4141.1.patch
>
>
> We would like to reduce the amount of configuration going over the wire from
> a client to application master. If Input/Output processors load local config
> files, we can reduce the configuration overhead when client and the
> processors have the exact same config on both sides. It is on user of client
> to keep the configs same on both sides. Currently, clients have to send all
> config in payload. Even if we preload config with local xml files, these
> should be overridden by the full config object coming in payload. Therefore,
> old clients that send all the config anyway would not be affected in terms of
> correctness from this change.
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