[jira] [Updated] (SPARK-3409) Avoid pulling in Exchange operator itself in Exchange's closures

["Andrew Or (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-3409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Or updated SPARK-3409:
-----------------------------
    Fix Version/s: 1.1.1

> Avoid pulling in Exchange operator itself in Exchange's closures
> ----------------------------------------------------------------
>
>                 Key: SPARK-3409
>                 URL: https://issues.apache.org/jira/browse/SPARK-3409
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 1.1.0
>            Reporter: Reynold Xin
>            Assignee: Reynold Xin
>             Fix For: 1.1.1, 1.2.0
>
>
> {code}
>         val rdd = child.execute().mapPartitions { iter =>
>           if (sortBasedShuffleOn) {
>             iter.map(r => (null, r.copy()))
>           } else {
>             val mutablePair = new MutablePair[Null, Row]()
>             iter.map(r => mutablePair.update(null, r))
>           }
>         }
> {code}
> The above snippet from Exchange references sortBasedShuffleOn within a closure, which requires pulling in the entire Exchange object in the closure. 
> This is a tiny teeny optimization.



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