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Posted to issues@spark.apache.org by "Xiao Li (JIRA)" <ji...@apache.org> on 2018/07/29 20:17:00 UTC

[jira] [Resolved] (SPARK-24809) Serializing LongHashedRelation in executor may result in data error

     [ https://issues.apache.org/jira/browse/SPARK-24809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiao Li resolved SPARK-24809.
-----------------------------
       Resolution: Fixed
    Fix Version/s: 2.4.0
                   2.3.2
                   2.2.3
                   2.1.4

> Serializing LongHashedRelation in executor may result in data error
> -------------------------------------------------------------------
>
>                 Key: SPARK-24809
>                 URL: https://issues.apache.org/jira/browse/SPARK-24809
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.0, 2.1.0, 2.2.0, 2.3.0
>         Environment: Spark 2.2.1
> hadoop 2.7.1
>            Reporter: Lijia Liu
>            Priority: Critical
>              Labels: correctness
>             Fix For: 2.1.4, 2.2.3, 2.3.2, 2.4.0
>
>         Attachments: Spark LongHashedRelation serialization.svg
>
>
> When join key is long or int in broadcast join, Spark will use LongHashedRelation as the broadcast value. Details see SPARK-14419. But, if the broadcast value is abnormal big, executor will serialize it to disk. But, data will lost when serializing.



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