GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/20466
[SPARK-23293][SQL] fix data source v2 self join
## What changes were proposed in this pull request?
`DataSourceV2Relation` should extend `MultiInstanceRelation`, to take care
of self-join.
## How was this patch tested?
a new test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark dsv2-selfjoin
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20466.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 #20466
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commit 6e55d1000c62a86c14ad993d3699b0ed99f53cbb
Author: Wenchen Fan <wenchen@...>
Date: 2018-02-01T05:07:07Z
fix data source v2 self join
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