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https://issues.apache.org/jira/browse/ORC-345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16443273#comment-16443273
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ASF GitHub Bot commented on ORC-345:
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GitHub user omalley opened a pull request:
https://github.com/apache/orc/pull/252
ORC-345 Create and use a new Decimal64StatisticsImpl on the write path
Currently the DecimalTreeWriter spends a lot of time maintaining the
statistics for decimal objects. For short decimals (p <= 18) we can use longs
to track the min, max, and sum.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/omalley/orc orc-345
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/orc/pull/252.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #252
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commit 12c37d717010e5b683074633b273b0bad0180e05
Author: Owen O'Malley <omalley@...>
Date: 2018-04-18T03:16:12Z
ORC-344. Support the new Decimal64ColumnVector.
Fixes #250
Signed-off-by: Owen O'Malley <[email protected]>
commit e7c395ed2e5a68e480e31c4ba6d74237e5025a33
Author: Owen O'Malley <omalley@...>
Date: 2018-04-18T21:30:35Z
ORC-345. Create Decimal64StatisticsImpl.
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> Create a Decimal64StatisticsImpl
> --------------------------------
>
> Key: ORC-345
> URL: https://issues.apache.org/jira/browse/ORC-345
> Project: ORC
> Issue Type: Improvement
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Priority: Major
>
> We should create a fast path for handling decimal statistics where precision
> <= 18 where the values can be handled as longs.
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