Github user cloud-fan closed the pull request at:
https://github.com/apache/spark/pull/14876
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Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/14876#discussion_r76900104
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sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/MergePartialAggregate.scala
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+/*
+ * Licensed to the
GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/14876
showcase, DO NOT MERGE
## What changes were proposed in this pull request?
this is another approach to fix SPARK-12978, which was done in
https://github.com/apache/spark/pull/10896
