[jira] [Created] (FLINK-9047) SlotPool can fail to release slots

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-9047:
------------------------------------

             Summary: SlotPool can fail to release slots
                 Key: FLINK-9047
                 URL: https://issues.apache.org/jira/browse/FLINK-9047
             Project: Flink
          Issue Type: Bug
          Components: Distributed Coordination
    Affects Versions: 1.5.0
            Reporter: Till Rohrmann
             Fix For: 1.5.0


The {{SlotPool}} releases idling slots. If the release operation fails (e.g. timeout), then it simply continues using the slot. This is problematic if the owning {{TaskExecutor}} failed before and was unregistered in the meantime from the {{SlotPool}}. As a result, the {{SlotPool}} will reuse the slot and whenever it tries to return because it is idling it will fail again. This, effectively, renders the scheduling of a job impossible.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)