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From "liuxian (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-23989) When using `SortShuffleWriter`, the data will be overwritten
Date Wed, 18 Apr 2018 06:44:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-23989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16441980#comment-16441980
] 

liuxian commented on SPARK-23989:
---------------------------------

{color:#9876aa}I think '{color:#333333}SortShuffleWriter{color}' should adapt to any  shufflewrite
scene{color}

> When using `SortShuffleWriter`, the data will be overwritten
> ------------------------------------------------------------
>
>                 Key: SPARK-23989
>                 URL: https://issues.apache.org/jira/browse/SPARK-23989
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 2.3.0
>            Reporter: liuxian
>            Priority: Critical
>         Attachments: 无标题2.png
>
>
> {color:#333333}When using `SortShuffleWriter`, we only insert  '{color}{color:#cc7832}AnyRef{color}{color:#333333}'
into '{color}PartitionedAppendOnlyMap{color:#333333}' or '{color}PartitionedPairBuffer{color:#333333}'.{color}
> {color:#333333}For this function:{color}
> {color:#cc7832}override def {color}{color:#ffc66d}write{color}(records: {color:#4e807d}Iterator{color}[Product2[{color:#4e807d}K{color}{color:#cc7832},
{color}{color:#4e807d}V{color}]])
> the value of 'records' is `UnsafeRow`, so  the value will be overwritten
> {color:#333333} {color}



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