Till Rohrmann created FLINK-1583:
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Summary: TaskManager reregistration in case of a restart
Key: FLINK-1583
URL: https://issues.apache.org/jira/browse/FLINK-1583
Project: Flink
Issue Type: Bug
Reporter: Till Rohrmann
Currently, the {{InstanceManager}} identifies {{Instance}}s based on their
{{InstanceConnectionInfo}}. In case of a restarted {{TaskManager}} which tries
to register newly at the {{JobManager}}, the {{InstanceManager}} can mistake
this {{TaskManager}} as already registered. This can lead to a corrupted state.
We should identify {{TaskManager}}s based on some ID to distinguish distinct
registration attempts of a restarted {{TaskManager}}. This will improve the
system's stability.
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