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Posted to issues@tez.apache.org by "Mustafa Iman (Jira)" <ji...@apache.org> on 2020/04/20 06:06:00 UTC
[jira] [Commented] (TEZ-4137) Input/Output/Processor should merge
payload to local conf
[ https://issues.apache.org/jira/browse/TEZ-4137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17087393#comment-17087393 ]
Mustafa Iman commented on TEZ-4137:
-----------------------------------
[~jeagles] do you think this is a viable approach?
CC: [~gopalv]
> Input/Output/Processor should merge payload to local conf
> ---------------------------------------------------------
>
> Key: TEZ-4137
> URL: https://issues.apache.org/jira/browse/TEZ-4137
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Mustafa Iman
> Assignee: Mustafa Iman
> Priority: Major
> Attachments: TEZ-4137.1.patch, TEZ-4137.2.patch, TEZ-4137.3.patch, TEZ-4137.4.patch
>
>
> This patch introduces config merging to various Input and Output processors. As described in https://issues.apache.org/jira/browse/TEZ-4073 , we need to reduce the size of the configuration objects transferred over the wire. There are two improvements we are planning to do regarding to that:
> # Skip sending default configs and configuration coming from xml files in payload
> # Send dag, vertex and session configurations in layers instead of sending dag + vertex + session configs all together three times.
> In order to achieve these,
> * We need to expose local config on Task side through TaskContext.
> * Input/Output/Processors must merge the config from user payload to local config in their TaskContext
> Since runtime components did not have access to local config before, tez clients sent all config required at runtime in user payload. After this change, tez clients can reduce their payload size.
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