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Posted to issues@spark.apache.org by "Lianhui Wang (JIRA)" <ji...@apache.org> on 2015/12/12 15:49:46 UTC
[jira] [Updated] (SPARK-4621) Shuffle index can cached for
SortShuffleManager in ExternalShuffle in order to reduce indexFile's io
[ https://issues.apache.org/jira/browse/SPARK-4621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lianhui Wang updated SPARK-4621:
--------------------------------
Summary: Shuffle index can cached for SortShuffleManager in ExternalShuffle in order to reduce indexFile's io (was: when sort- based shuffle, Cache recently finished shuffle index can reduce indexFile's io)
> Shuffle index can cached for SortShuffleManager in ExternalShuffle in order to 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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