Till Rohrmann created FLINK-8504:
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Summary: TaskExecutor does not properly deregisters JobManager
from JobLeaderService
Key: FLINK-8504
URL: https://issues.apache.org/jira/browse/FLINK-8504
Project: Flink
Issue Type: Bug
Components: Distributed Coordination
Affects Versions: 1.5.0
Reporter: Till Rohrmann
Fix For: 1.5.0
The {{TaskExecutor}} should deregister jobs from the {{JobLeaderService}} once
it no longer holds slots for this job. The problem is that before unregistering
the job from the {{JobLeaderService}} in {{TaskExecutor#freeInternal}}, the
actual slot is freed which also removes the {{JobID}} from the slot. Therefore,
we lose the information to which job the slot belonged. An easy solution would
be to return a {{SlotInformation}} object instead of the {{TaskSlot}} from
{{TaskSlotTable#freeSlot}} which contains the respective information.
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