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https://issues.apache.org/jira/browse/SPARK-15003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-15003:
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Assignee: Apache Spark
> Use ConcurrentHashMap in place of HashMap for NewAccumulator.originals
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>
> Key: SPARK-15003
> URL: https://issues.apache.org/jira/browse/SPARK-15003
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Ted Yu
> Assignee: Apache Spark
>
> This issue proposes to use ConcurrentHashMap in place of HashMap for
> NewAccumulator.originals
> This should result in better performance.
> Also removed AccumulatorContext#accumIds
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