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https://issues.apache.org/jira/browse/SPARK-4621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lianhui Wang updated SPARK-4621:
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Priority: Minor (was: Critical)
> when sort- based shuffle, Cache recently finished shuffle index can reduce
> indexFile's io
> -----------------------------------------------------------------------------------------
>
> Key: SPARK-4621
> URL: https://issues.apache.org/jira/browse/SPARK-4621
> Project: Spark
> Issue Type: Improvement
> Components: Shuffle
> Reporter: Lianhui Wang
> Priority: Minor
>
> in IndexShuffleBlockManager, we can use LRUCache to store recently finished
> shuffle index and that can reduce indexFile's io.
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