Zhu Zhu created FLINK-17726:
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Summary: Scheduler should take care of tasks directly canceled by
TaskManager
Key: FLINK-17726
URL: https://issues.apache.org/jira/browse/FLINK-17726
Project: Flink
Issue Type: Bug
Components: Runtime / Coordination
Affects Versions: 1.12.0
Reporter: Zhu Zhu
Fix For: 1.12.0
JobManager will not trigger failure handling when receiving CANCELED task
update.
This is because CANCELED tasks are usually caused by another FAILED task. These
CANCELED tasks will be restarted by the failover process triggered FAILED task.
However, if a task is directly CANCELED by TaskManager due to its own runtime
issue, the task will not be recovered by JM and thus the job would hang.
This is a potential issue and we should avoid it.
A possible solution is to let JobManager treat tasks transitioning to CANCELED
from all states except from CANCELING as failed tasks.
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