jin xing created SPARK-23637:
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Summary: Yarn might allocate more resource if a same executor is
killed multiple times.
Key: SPARK-23637
URL: https://issues.apache.org/jira/browse/SPARK-23637
Project: Spark
Issue Type: Bug
Components: YARN
Affects Versions: 2.3.0
Reporter: jin xing
{YarnAllocator} uses \{numExecutorsRunning} to track the number of running
executor. \{numExecutorsRunning} is used to check if there're executors missing
and need to allocate more.
In current code, \{numExecutorsRunning} can be negative when driver asks to
kill a same idle executor multiple times.
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