Description
This related to fault tolerance implementation in PR-1251.
Currently recovery logic in IMRU driver is to wait for all task to move to a final state (failed or completed) before restarting the job check AreAllTasksInFinalState() in TryRecovery() method)
We've seen driver hanging for a long time waiting for few last tasks finalize.
Aborting tasks should be quick, so there is bug there, but we also can add logic in driver not to wait for all tasks to complete.
For instance: if 5% of tasks did not report final state withing expected period, release corresponding evaluators and proceed with new job retry.
Attachments
Issue Links
- Is contained by
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REEF-1223 IMRU Fault Tolerance - restart failed evaluators
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- Resolved
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