[jira] [Created] (FLINK-20511) Deprecate the classes in scala `nodes.exec` package

[Shang Yuanchun (Jira)]

godfrey he created FLINK-20511:
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             Summary: Deprecate the classes in scala `nodes.exec` package
                 Key: FLINK-20511
                 URL: https://issues.apache.org/jira/browse/FLINK-20511
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: godfrey he


As we will separate the implementation of {{RelNode}} and {{ExecNode}}, the new classes introduce for {{ExecNode}} implementation will be Java. So the classes in `nodes.exec` package will be deprecated, we will rename {{ExecNodeBase}} to {{LegaceExecNodeBase}}, rename {{BatchExecNode}} to {{LegacyBatchExecNode}}, and rename {{StreamExecNode}} to {{LegacyStreamExecNode}}



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