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Posted to issues@tez.apache.org by "Zhiyuan Yang (JIRA)" <ji...@apache.org> on 2017/01/19 22:53:26 UTC
[jira] [Comment Edited] (TEZ-3573) Allow user to cap number of task
in cartesian product (unpartitioned case)
[ https://issues.apache.org/jira/browse/TEZ-3573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15830755#comment-15830755 ]
Zhiyuan Yang edited comment on TEZ-3573 at 1/19/17 10:53 PM:
-------------------------------------------------------------
Since auto grouping patch was already committed, cancel and re-submit patch for test run.
was (Author: aplusplus):
Auto grouping patch is already committed. Cancel and re-submit patch for test run.
> Allow user to cap number of task in cartesian product (unpartitioned case)
> --------------------------------------------------------------------------
>
> Key: TEZ-3573
> URL: https://issues.apache.org/jira/browse/TEZ-3573
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: Zhiyuan Yang
> Assignee: Zhiyuan Yang
> Attachments: TEZ-3573.1.patch, TEZ-3573.2.patch
>
>
> Auto grouping can help reduce #tasks in cartesian product but may still result in too many tasks in case of huge input data. It will be useful for user to cap #task, so that cartesian product won't abuse available resource. The primary limiter will still be auto grouping, but this will be a hard limit which cannot be exceeded anyway.
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