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https://issues.apache.org/jira/browse/FLINK-28380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yingjie Cao closed FLINK-28380.
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Resolution: Fixed
Merged into master via 60bc87c0b83149c4f19d7e54af2d967087a277fb
> Produce one intermediate dataset for multiple consumers consuming the same
> data
> -------------------------------------------------------------------------------
>
> Key: FLINK-28380
> URL: https://issues.apache.org/jira/browse/FLINK-28380
> Project: Flink
> Issue Type: Sub-task
> Components: Client / Job Submission, Runtime / Coordination, Runtime
> / Network
> Reporter: Yingjie Cao
> Assignee: Yingjie Cao
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.16.0
>
>
> Currently, if one output of an upstream job vertex is consumed by multiple
> downstream job vertices, the upstream vertex will produce multiple dataset.
> For blocking shuffle, it means serialize and persist the same data multiple
> times. This ticket aims to optimize this behavior and make the upstream job
> vertex produce one dataset which will be read by multiple downstream vertex.
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