Bikas Saha created YARN-1366:
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Summary: ApplicationMasterService should Resync with the AM upon
allocate call after restart
Key: YARN-1366
URL: https://issues.apache.org/jira/browse/YARN-1366
Project: Hadoop YARN
Issue Type: Sub-task
Reporter: Bikas Saha
The ApplicationMasterService currently sends a resync response to which the AM
responds by shutting down. The AM behavior is expected to change to calling
resyncing with the RM. Resync means resetting the allocate RPC sequence number
to 0 and the AM should send its entire outstanding request to the RM. Note that
if the AM is making its first allocate call to the RM then things should
proceed like normal without needing a resync. The RM will return all containers
that have completed since the RM last synced with the AM. Some container
completions may be reported more than once.
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