[jira] [Created] (FLINK-18012) Deactivate slot timeout if TaskSlotTable.tryMarkSlotActive is called

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-18012:
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             Summary: Deactivate slot timeout if TaskSlotTable.tryMarkSlotActive is called
                 Key: FLINK-18012
                 URL: https://issues.apache.org/jira/browse/FLINK-18012
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.10.1, 1.9.3, 1.11.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann
             Fix For: 1.11.0, 1.10.2, 1.9.4


With FLINK-9932 we loosened the slot allocation protocol in a way that the {{JobMaster}} can deploy {{Tasks}} into a slot which has not been {{ACTIVATED}} but only {{ALLOCATED}} for a given job. This allowed to better handle the case where the {{JobMasterGateway#offerSlots}} response was late so that it timed out. The way it was solved is to offer a {{TaskSlotTable#tryMarkSlotActive}} method which, in contrast to {{TaskSlotTable#markSlotActive}}, would not fail if the requested slot was not available.

However, the problem is that the former method does not deactivate the slot timeout. Hence, it can happen if the {{offerSlots}} response never arrives at the {{TaskExecutor}} that an {{ACTIVATED}} slot times out.

In order to fix the problem, we should also deactivate the slot timeout when {{TaskSlotTable#tryMarkSlotActive}} is being called.



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