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From " (Commented) (JIRA)" <>
Subject [jira] [Commented] (HIVE-2543) Compact index table's files merged in creation
Date Wed, 02 Nov 2011 01:21:33 GMT

] commented on HIVE-2543:

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Review request for hive, Yongqiang He, Ning Zhang, and namit jain.


By explicitely setting the two variable HIVEMERGEMAPFILES and HIVEMERGEMAPREDFILES to false
before compiling the query to build the index, it guarantees that there will not be a merge

This addresses bug HIVE-2543.


  trunk/ql/src/java/org/apache/hadoop/hive/ql/index/ 1196155 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/index/compact/ 1196155



I ran an explain plan on a command to rebuild an index and verified it did not contain a merge

I also verified all the index related tests still pass.



> Compact index table's files merged in creation
> ----------------------------------------------
>                 Key: HIVE-2543
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Kevin Wilfong
>            Assignee: Kevin Wilfong
>         Attachments: HIVE-2543.1.patch.txt
> When a compact index is built there is the possibility of a merge task at the end of
the task tree.  If this happens, the index table's files will no longer be sorted.

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