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https://issues.apache.org/jira/browse/FLINK-2237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15119731#comment-15119731
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ASF GitHub Bot commented on FLINK-2237:
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Github user ggevay commented on the pull request:
https://github.com/apache/flink/pull/1517#issuecomment-175734134
I have changed the hash function to include that bit-magic that is done in
the other hash tables. (Originally, I thought that it is not needed here,
because I haven't realized that it is not only for diffusing clusters, but also
to have the high bits affect the low bits of the hashes.)
> Add hash-based Aggregation
> --------------------------
>
> Key: FLINK-2237
> URL: https://issues.apache.org/jira/browse/FLINK-2237
> Project: Flink
> Issue Type: New Feature
> Reporter: Rafiullah Momand
> Assignee: Gabor Gevay
> Priority: Minor
>
> Aggregation functions at the moment are implemented in a sort-based way.
> How can we implement hash based Aggregation for Flink?
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