[jira] [Created] (FLINK-20854) Introduce BytesMultiMap to support buffering records

[Shang Yuanchun (Jira)]

Jark Wu created FLINK-20854:
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             Summary: Introduce BytesMultiMap to support buffering records
                 Key: FLINK-20854
                 URL: https://issues.apache.org/jira/browse/FLINK-20854
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Runtime
            Reporter: Jark Wu
            Assignee: Jark Wu
             Fix For: 1.13.0






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