Tarun Parimi created MAPREDUCE-7278:
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Summary: Speculative execution behavior is observed even when
mapreduce.map.speculative and mapreduce.reduce.speculative are false
Key: MAPREDUCE-7278
URL: https://issues.apache.org/jira/browse/MAPREDUCE-7278
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: task
Affects Versions: 2.8.0
Reporter: Tarun Parimi
Attachments: Screen Shot 2020-04-30 at 8.04.27 PM.png
When a failed task attempt container is stuck in FAIL_FINISHING_CONTAINER state
for some time, we observe two task attempts are launched simultaneously even
when speculative execution is disabled.
This results in the below message shown in the killed attempts, indicating
speculation has occurred. This is an issue for jobs which require speculative
execution to be strictly disabled.
!Screen Shot 2020-04-30 at 8.04.27 PM.png!
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