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Posted to issues@spark.apache.org by "Aaron Davidson (JIRA)" <ji...@apache.org> on 2014/11/11 09:26:35 UTC

[jira] [Resolved] (SPARK-4307) Initialize FileDescriptor lazily in FileRegion

     [ https://issues.apache.org/jira/browse/SPARK-4307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aaron Davidson resolved SPARK-4307.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.2.0

> Initialize FileDescriptor lazily in FileRegion
> ----------------------------------------------
>
>                 Key: SPARK-4307
>                 URL: https://issues.apache.org/jira/browse/SPARK-4307
>             Project: Spark
>          Issue Type: Improvement
>          Components: Shuffle
>            Reporter: Reynold Xin
>            Assignee: Reynold Xin
>             Fix For: 1.2.0
>
>
> We use Netty's DefaultFileRegion to do zero copy send. However, DefaultFileRegion requires a FileDescriptor, which results in a large number of opened files in larger workloads.



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