[jira] [Created] (FLINK-19834) Make the TestSink reusable in all the sink related tests.

[Guowei Ma (Jira)]

Guowei Ma created FLINK-19834:
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             Summary: Make the TestSink reusable in all the sink related tests.
                 Key: FLINK-19834
                 URL: https://issues.apache.org/jira/browse/FLINK-19834
             Project: Flink
          Issue Type: Sub-task
          Components: API / DataStream
            Reporter: Guowei Ma






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