GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/2960
Fixes caching related JoinSuite failure
PR #2860 refines in-memory table statistics and enables broader broadcasted
hash join optimization for in-memory tables. This makes `JoinSuite` fail when
some test suite caches test table `testData` and gets executed before
`JoinSuite`. Because expected `ShuffledHashJoin`s are optimized to
`BroadcastedHashJoin` according to collected in-memory table statistics.
This PR fixes this issue by clearing the cache before testing join operator
selection. A separate test case is also added to test broadcasted hash join
operator selection.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark fix-join-suite
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2960.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 #2960
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commit 715b2dec4fd569d9361a3713414bce2c76ce5452
Author: Cheng Lian <[email protected]>
Date: 2014-10-27T10:52:21Z
Fixes caching related JoinSuite failure
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