[jira] [Created] (FLINK-5299) DataStream support for arrays as keys

[Shang Yuanchun (Jira)]

Chesnay Schepler created FLINK-5299:
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             Summary: DataStream support for arrays as keys
                 Key: FLINK-5299
                 URL: https://issues.apache.org/jira/browse/FLINK-5299
             Project: Flink
          Issue Type: Improvement
          Components: DataStream API
    Affects Versions: 1.2.0
            Reporter: Chesnay Schepler


It is currently not possible to use an array as a key in the DataStream api, as it relies on hashcodes which aren't stable for arrays.

One way to implement this would be to check for the key type and inject a KeySelector that calls "Arrays.hashcode(values)".



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