GitHub user aokolnychyi opened a pull request:

    [MINOR][SQL] Additional test case for CheckCartesianProducts rule

    ## What changes were proposed in this pull request?
    While discovering optimization rules and their test coverage, I did not 
find any tests for `CheckCartesianProducts` in the Catalyst folder. So, I 
decided to create a new test suite. Once I finished, I found a test in 
`JoinSuite` for this functionality so feel free to discard this change if it 
does not make much sense. The proposed test suite covers a few additional use 

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

    $ git pull check-cartesian-join-tests

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 #18909
commit 98b54cad45b638515d36966a1e64955f4f1531d1
Author: aokolnychyi <>
Date:   2017-08-09T21:13:02Z

    [MINOR][SQL] Additional test case for CheckCartesianProducts rule


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