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From fhueske <...@git.apache.org>
Subject [GitHub] flink pull request: [FLINK-3474] support partial aggregate
Date Mon, 07 Mar 2016 10:21:38 GMT
Github user fhueske commented on the pull request:

    Thanks Chengxiang for the update. I think we can merge the PR now.
    But we should open a JIRA and improve the LongAvg aggregation. The communication between
Mapper and GroupReduce for aggregation is Flink internal and there is no need to expose this
to Calcite. I am not sure if our abstraction is well chosen, i.e., that a single DataSetNode
should only translate to a single DataSet operator. Maybe we should do another refactoring
before merging back to master?

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