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From "Aman Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3765) Partition prune rule is unnecessary fired multiple times.
Date Mon, 16 Nov 2015 16:23:11 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15006861#comment-15006861
] 

Aman Sinha commented on DRILL-3765:
-----------------------------------

[~jni] I did not realize this was assigned to me for review...will do that soon.  

> Partition prune rule is unnecessary fired multiple times. 
> ----------------------------------------------------------
>
>                 Key: DRILL-3765
>                 URL: https://issues.apache.org/jira/browse/DRILL-3765
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>            Reporter: Jinfeng Ni
>            Assignee: Aman Sinha
>
> It seems that the partition prune rule may be fired multiple times, even after the first
rule execution has pushed the filter into the scan operator. Since partition prune has to
build the vectors to contain the partition /file / directory information, to invoke the partition
prune rule unnecessary may lead to big memory overhead.
> Drill planner should avoid the un-necessary partition prune rule, in order to reduce
the chance of hitting OOM exception, while the partition prune rule is executed.



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