[jira] [Created] (FLINK-14289) Remove Optional fields from RecordWriter relevant classes

[Shang Yuanchun (Jira)]

zhijiang created FLINK-14289:
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             Summary: Remove Optional fields from RecordWriter relevant classes
                 Key: FLINK-14289
                 URL: https://issues.apache.org/jira/browse/FLINK-14289
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Task
            Reporter: zhijiang
            Assignee: zhijiang


Based on the code style guides for [Jave Optional|[https://flink.apache.org/contributing/code-style-and-quality-java.html#java-optional]|https://flink.apache.org/contributing/code-style-and-quality-java.html#java-optional],] , the optional should not be used for class fields. 

So we remove the optional usages from RecordWriter, BroadcastRecordWriter and ChannelSelectorRecordWriter.



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