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https://issues.apache.org/jira/browse/FLINK-11039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16706089#comment-16706089
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Jark Wu commented on FLINK-11039:
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Hi [~ambition], could you explain more about why we need to introduce
LogicalExchange node and what the benefit from this?
> LogicalExchange and HashPartitioner realization
> -----------------------------------------------
>
> Key: FLINK-11039
> URL: https://issues.apache.org/jira/browse/FLINK-11039
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.6.2, 1.7.0
> Reporter: ambition
> Priority: Minor
> Fix For: 1.7.0
>
>
> FlinkLogicalExchange realization
> org.apache.calcite.rel.logical.LogicalExchange.
> HashPartitioner is Partitioner that implements hash-based partitioning using
> Java's `Object.hashCode`. support org.apache.calcite.rel.RelDistribution.Type
> HASH_DISTRIBUTED
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