GitHub user marmbrus opened a pull request:
https://github.com/apache/spark/pull/5251
[SPARK-6595][SQL] MetastoreRelation should be a MultiInstanceRelation
Now that we have `DataFrame`s it is possible to have multiple copies in a
single query plan. As such, it needs to inherit from `MultiInstanceRelation`
or self joins will break. I also add better debugging errors when our self
join handling fails in case there are future bugs.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/marmbrus/spark multiMetaStore
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5251.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 #5251
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commit 4272f6d7077ee48898b217b6fa28913c51948541
Author: Michael Armbrust <[email protected]>
Date: 2015-03-29T20:09:15Z
[SPARK-6595][SQL] MetastoreRelation should be MuliInstanceRelation
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