GitHub user ericl opened a pull request:
https://github.com/apache/spark/pull/14427
[SPARK-16818] Exchange reuse incorrectly reuses scans over different sets
of partitions
https://github.com/apache/spark/pull/14425 rebased for branch-2.0
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ericl/spark spark-16818-br-2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14427.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 #14427
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commit ef60367331fb3097040cfb0849bdc314c8d399ea
Author: Eric Liang <e...@databricks.com>
Date: 2016-07-31T05:48:09Z
[SPARK-16818] Exchange reuse incorrectly reuses scans over different sets
of partitions
This fixes a bug wherethe file scan operator does not take into account
partition pruning in its implementation of `sameResult()`. As a result,
executions may be incorrect on self-joins over the same base file relation.
The patch here is minimal, but we should reconsider relying on `metadata`
for implementing sameResult() in the future, as string representations may not
be uniquely identifying.
cc rxin
Unit tests.
Author: Eric Liang <e...@databricks.com>
Closes #14425 from ericl/spark-16818.
Conflicts:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileSourceStrategy.scala
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