Thomas Graves created SPARK-28403:
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Summary: Executor Allocation Manager can add an extra executor
when speculative tasks
Key: SPARK-28403
URL: https://issues.apache.org/jira/browse/SPARK-28403
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 2.3.0
Reporter: Thomas Graves
It looks like SPARK-19326 added a bug in the execuctor allocation maanger where
it adds an extra executor when it shouldn't when we have pending speculative
tasks but the target number didn't change.
[https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala#L377]
It doesn't look like this is necessary since it already added in the
pendingSpeculative tasks.
See the questioning of this on the PR at:
https://github.com/apache/spark/pull/18492/files#diff-b096353602813e47074ace09a3890d56R379
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