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yong yang commented on FLINK-31268: ----------------------------------- 1 > OperatorCoordinator.Context#metricGroup will return null when restore from a > savepoint > -------------------------------------------------------------------------------------- > > Key: FLINK-31268 > URL: https://issues.apache.org/jira/browse/FLINK-31268 > Project: Flink > Issue Type: Improvement > Components: Runtime / Metrics > Reporter: Hang Ruan > Assignee: Hang Ruan > Priority: Blocker > Labels: pull-request-available > Fix For: 1.18.0 > > > The `metricGroup` is initialized lazily in the method > `OperatorCoordinatorHandler#initializeOperatorCoordinators`. > This will cause the NullPointerException when we use it in the method like > `Source#restoreEnumerator`, which will be invoked through > `SchedulerBase#createAndRestoreExecutionGraph` before > `OperatorCoordinatorHandler#initializeOperatorCoordinators` in class > `SchedulerBase#<init>`. -- This message was sent by Atlassian Jira (v8.20.10#820010)