GitHub user JkSelf opened a pull request:
https://github.com/apache/spark/pull/23204
Revert "[SPARK-21052][SQL] Add hash map metrics to join"
Because of the performance degradation discussion in
[SPARK-26155](https://issues.apache.org/jira/browse/SPARK-26155), currently we
revert [SPARK-21052](https://issues.apache.org/jira/browse/SPARK-21052)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/JkSelf/spark revert-21052
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23204.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 #23204
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commit 7d5008d11e37086f4a8206276791b9424bcf60b7
Author: jiake <ke.a.jia@...>
Date: 2018-12-03T08:18:44Z
Revert "[SPARK-21052][SQL] Add hash map metrics to join"
This reverts commit 18066f2e61f430b691ed8a777c9b4e5786bf9dbc.
Conflicts:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/HashAggregateExec.scala
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/TungstenAggregationIterator.scala
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashJoin.scala
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
sql/core/src/test/scala/org/apache/spark/sql/execution/metric/SQLMetricsSuite.scala
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