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https://issues.apache.org/jira/browse/ORC-305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16448539#comment-16448539
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ASF GitHub Bot commented on ORC-305:
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GitHub user moresandeep opened a pull request:
https://github.com/apache/orc/pull/255
ORC-305 - Add column statistics for the size on disk
This PR adds column statistics for the size on disk.
I have updated the Unit Tests to reflect this change, I have also manually
gone through some test cases to verify that the size on disk value is correct.
ROW_INDEXs are excluded from the calculation.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/moresandeep/orc ORC-305-Column_Statistics
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/orc/pull/255.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 #255
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commit 688517b0072de56bdabe118a1dcf2346d10d3f48
Author: Sandeep More <more@...>
Date: 2018-03-21T13:46:19Z
ORC-305 - Add column statistics for the size on disk
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> Add column statistics for the size on disk
> ------------------------------------------
>
> Key: ORC-305
> URL: https://issues.apache.org/jira/browse/ORC-305
> Project: ORC
> Issue Type: Test
> Reporter: Owen O'Malley
> Assignee: Sandeep More
> Priority: Major
>
> It would be great to have the size on disk of each column.
> You can generate this by adding up the sizes of the dictionary and data
> streams.
> It is only relevant at the stripe and file level.
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