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https://issues.apache.org/jira/browse/FLINK-15444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhijiang closed FLINK-15444.
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Resolution: Fixed
Merged in master : 9f92ddfecad6e056cc4b58311e493cbb0884357b
> Make the component AbstractInvokable in CheckpointBarrierHandler NonNull
> -------------------------------------------------------------------------
>
> Key: FLINK-15444
> URL: https://issues.apache.org/jira/browse/FLINK-15444
> Project: Flink
> Issue Type: Task
> Components: Runtime / Checkpointing
> Reporter: zhijiang
> Assignee: zhijiang
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.11.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The current component {{AbstractInvokable}} in {{CheckpointBarrierHandler}}
> is annotated as {{@Nullable}}. Actually in real code path it is passed via
> the constructor and never be null. The nullable annotation is only used for
> unit test purpose. But this way would mislead the real usage in practice and
> bring extra troubles, because you have to alway check whether it is null
> before usage in related processes.
> We can refactor the related unit tests to implement a dummy
> {{AbstractInvokable}} for tests and remove the {{@Nullable}} annotation from
> the related class constructors.
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