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https://issues.apache.org/jira/browse/HIVE-1608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13962487#comment-13962487
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Brock Noland commented on HIVE-1608:
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A couple of notes on this one:
1) Most of the test failures look to be related to the .q.out files being
different (referencing TextFile output class not SequenceFile)
2) This change as-is would be backwards incompatible for INSERT OVERWRITE
DIRECTORY users.
Thus I think we need:
1) Leave the default of TextFile for INSERT OVERWRITE DIRECTORY
2) Update the .q.out files
> use sequencefile as the default for storing intermediate results
> ----------------------------------------------------------------
>
> Key: HIVE-1608
> URL: https://issues.apache.org/jira/browse/HIVE-1608
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.7.0
> Reporter: Namit Jain
> Assignee: Brock Noland
> Fix For: 0.14.0
>
> Attachments: HIVE-1608.patch
>
>
> The only argument for having a text file for storing intermediate results
> seems to be better debuggability.
> But, tailing a sequence file is possible, and it should be more space
> efficient
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