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Posted to issues@spark.apache.org by "angerszhu (JIRA)" <ji...@apache.org> on 2019/08/05 06:33:00 UTC
[jira] [Resolved] (SPARK-28618) SparkSQL Plan CollectLimitExec may
cause OOM
[ https://issues.apache.org/jira/browse/SPARK-28618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
angerszhu resolved SPARK-28618.
-------------------------------
Resolution: Auto Closed
> SparkSQL Plan CollectLimitExec may cause OOM
> --------------------------------------------
>
> Key: SPARK-28618
> URL: https://issues.apache.org/jira/browse/SPARK-28618
> Project: Spark
> Issue Type: Wish
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: angerszhu
> Priority: Major
> Attachments: image-2019-08-05-14-02-51-577.png, image-2019-08-05-14-03-16-112.png
>
>
> When we call a limit in SQL or DataFrame, it will execute like below,if we call limit(100), it will gather each partition;s first 100 rows data into one partition. If we call like limit 1000000, it will cause OOM for this singal partition.
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