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Posted to dev@pig.apache.org by "Daniel Dai (JIRA)" <ji...@apache.org> on 2014/11/10 06:26:34 UTC
[jira] [Commented] (PIG-4069) Limit reduce task should start as
soon as one map task finishes
[ https://issues.apache.org/jira/browse/PIG-4069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204362#comment-14204362 ]
Daniel Dai commented on PIG-4069:
---------------------------------
+1
> Limit reduce task should start as soon as one map task finishes
> ---------------------------------------------------------------
>
> Key: PIG-4069
> URL: https://issues.apache.org/jira/browse/PIG-4069
> Project: Pig
> Issue Type: Sub-task
> Components: tez
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.14.0
>
> Attachments: PIG-4069-1.patch, PIG-4069-2.patch, PIG-4069-3.patch, PIG-4069-Tez_0_5_2.patch
>
>
> Set very low values for ShuffleVertexManager.TEZ_AM_SHUFFLE_VERTEX_MANAGER_MIN_SRC_FRACTION and ShuffleVertexManager.TEZ_AM_SHUFFLE_VERTEX_MANAGER_MAX_SRC_FRACTION in case of LIMIT job not following an order by so that the reduce task starts as soon as 1 map task finishes.
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