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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