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https://issues.apache.org/jira/browse/SPARK-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng closed SPARK-4350.
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Resolution: Not a Problem
Found the real problem somewhere else.
> aggregate doesn't make copies of zeroValue in local mode
> --------------------------------------------------------
>
> Key: SPARK-4350
> URL: https://issues.apache.org/jira/browse/SPARK-4350
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.0.2, 1.1.0, 1.2.0
> Reporter: Xiangrui Meng
> Priority: Critical
>
> RDD.aggregate makes a copy of zeroValue to collect the task result. However,
> it doesn't make copies of zeroValue for each partition. In local mode, this
> causes race conditions.
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