[jira] [Commented] (SPARK-18375) Upgrade netty to 4.0.42.Final

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-18375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15651120#comment-15651120 ] 

Apache Spark commented on SPARK-18375:
--------------------------------------

User 'witgo' has created a pull request for this issue:
https://github.com/apache/spark/pull/15830

> Upgrade netty to 4.0.42.Final 
> ------------------------------
>
>                 Key: SPARK-18375
>                 URL: https://issues.apache.org/jira/browse/SPARK-18375
>             Project: Spark
>          Issue Type: Improvement
>          Components: Build, Spark Core
>    Affects Versions: 1.6.2, 2.0.1
>            Reporter: Guoqiang Li
>            Priority: Minor
>
> One of the important changes for 4.0.42.Final is "Support any FileRegion implementation when using epoll transport [#5825|https://github.com/netty/netty/pull/5825]".
> In 4.0.42.Final,[MessageWithHeader|https://github.com/apache/spark/blob/master/common/network-common/src/main/java/org/apache/spark/network/protocol/MessageWithHeader.java] can work properly when {{spark.(shufflem, rpc).io.mode}} is set to epoll



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