[ https://issues.apache.org/jira/browse/FLINK-31268?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jark Wu reassigned FLINK-31268: ------------------------------- Assignee: Hang Ruan > 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: Major > Labels: pull-request-available > > 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)