[jira] [Created] (FLINK-4380) Introduce KeyGroupAssigner and Max-Parallelism Parameter

[Shang Yuanchun (Jira)]

Aljoscha Krettek created FLINK-4380:
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             Summary: Introduce KeyGroupAssigner and Max-Parallelism Parameter
                 Key: FLINK-4380
                 URL: https://issues.apache.org/jira/browse/FLINK-4380
             Project: Flink
          Issue Type: Sub-task
          Components: Streaming
            Reporter: Aljoscha Krettek


For key-group sharding we need to introduce a {{KeyGroupAssigner}} that assigns key hashes to key-groups (or shards). Also, this issue is for tracking the addition of a {{max-parallelism}} parameter for tracking the number of key groups.



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