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https://issues.apache.org/jira/browse/IMPALA-12137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18066833#comment-18066833
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ASF subversion and git services commented on IMPALA-12137:
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Commit 79a12a7afefdfa59e4fb2570827243abe5070e82 in impala's branch
refs/heads/master from Balazs Hevele
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=79a12a7af ]
IMPALA-12137: Do not copy parquet data for dict encoded pages
For dict encoded pages, strings will point to the dictionary, and not
the data page, so there is no need to make a copy of the page data in
this case.
Change-Id: I3debd1d8e6b8825723b0d3f4aa82190b2cac1e0e
Reviewed-on: http://gerrit.cloudera.org:8080/24080
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Parquet scanner should not copy uncompressed data in dict encoded pages
> -----------------------------------------------------------------------
>
> Key: IMPALA-12137
> URL: https://issues.apache.org/jira/browse/IMPALA-12137
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Daniel Becker
> Assignee: Balazs Hevele
> Priority: Major
> Fix For: Impala 5.0.0
>
>
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