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From xuchuanyin <>
Subject [GitHub] carbondata pull request #1496: [CARBONDATA-1709][DataFrame] Support sort_col...
Date Tue, 14 Nov 2017 12:39:45 GMT
GitHub user xuchuanyin opened a pull request:

    [CARBONDATA-1709][DataFrame] Support sort_columns option in dataframe writer

    Be sure to do all of the following checklist to help us incorporate 
    your contribution quickly and easily:
     - [X] Any interfaces changed?
     - [X] Any backward compatibility impacted?
     - [X] Document update required?
     - [X] Testing done
            Please provide details on 
            - Whether new unit test cases have been added or why no new tests are required?
            `ADDED NEW TESTS`
            - How it is tested? Please attach test report.
            - Is it a performance related change? Please attach the performance test report.
            - Any additional information to help reviewers in testing this change.
     - [X] For large changes, please consider breaking it into sub-tasks under an umbrella
    While creating carbondata table from dataframe, `sort_column` property is not specified,
which by default will use all string columns as `sort_column`. So an option is required to
specify it as below:
      .option("sort_columns", "c1,c2")

You can merge this pull request into a Git repository by running:

    $ git pull opt_df_write_sort_column

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1496
commit 0ed4a13a046968be6d8da15262abfd05458bfdd8
Author: xuchuanyin <>
Date:   2017-11-14T12:23:35Z

    Support sort_columns option in dataframe writer



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