Jason Lowe created MAPREDUCE-4817:
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Summary: Hardcoded task ping timeout kills tasks localizing large
amounts of data
Key: MAPREDUCE-4817
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4817
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: applicationmaster, mr-am
Affects Versions: 0.23.3, 2.0.3-alpha
Reporter: Jason Lowe
When a task is launched and spends more than 5 minutes localizing files, the AM
will kill the task due to ping timeout. The AM's TaskHeartbeatHandler
currently tracks tasks via a progress timeout and a ping timeout. The progress
timeout can be controlled via mapreduce.task.timeout and even disabled by
setting the property to 0. The ping timeout, however, is hardcoded to 5
minutes and cannot be configured. Therefore if the task takes too long
localizing, it never gets running in order to ping back to the AM and the AM
kills it due to ping timeout.
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