Imran Rashid created SPARK-8029:
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Summary: ShuffleMapTasks must be robust to concurrent attempts on
the same executor
Key: SPARK-8029
URL: https://issues.apache.org/jira/browse/SPARK-8029
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.4.0
Reporter: Imran Rashid
When stages get retried, a task may have more than one attempt running at the
same time, on the same executor. Currently this causes problems for
ShuffleMapTasks, since all attempts try to write to the same output files.
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