[FLINK-11059] JobMaster may continue using an invalid slot if releasing idle slot meet a timeout - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Critical
Resolution: Fixed
Affects Version/s: 1.7.0
Fix Version/s: 1.7.3, 1.8.1, 1.9.0
Component/s: Runtime / Coordination
Labels:
- pull-request-available

Description

When job master releases an idle slot to task executor, it may meet a timeout exception which cause that task executor may have already released the slot, but job master will add the slot back to available slots, and the slot may be used again. Then job master will continue deploying task to the slot, but task executor does not recognize it.