[jira] [Created] (FLINK-20877) Refactor BytesHashMap and BytesMultiMap to support window key

[Shang Yuanchun (Jira)]

Jark Wu created FLINK-20877:
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             Summary: Refactor BytesHashMap and BytesMultiMap to support window key
                 Key: FLINK-20877
                 URL: https://issues.apache.org/jira/browse/FLINK-20877
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Runtime
            Reporter: Jark Wu
            Assignee: Jark Wu
             Fix For: 1.13.0


Currently, the {{BytesHashMap}} and {{BytesMultiMap}} only support {{BinaryRowData}} as the key. However, for window operators, the key should be {{groupKey + window}}. We should make them decouple with {{BinaryRowData}} key type and support window key.



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