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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2014/11/09 06:06:33 UTC

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

    [ https://issues.apache.org/jira/browse/SPARK-4307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14203778#comment-14203778 ] 

Apache Spark commented on SPARK-4307:
-------------------------------------

User 'rxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/3172

> 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
>
> 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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