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https://issues.apache.org/jira/browse/SPARK-27868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016541#comment-17016541
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Dongjoon Hyun commented on SPARK-27868:
---------------------------------------

Hi, [~vanzin]. Since there is no proper way to set `Fixed Version` for 
reverting, I removed `2.4.4` tag and add `release-note` for 2.4.5.
Please advise me if there is a better way~ Thanks.

> Better document shuffle / RPC listen backlog
> --------------------------------------------
>
>                 Key: SPARK-27868
>                 URL: https://issues.apache.org/jira/browse/SPARK-27868
>             Project: Spark
>          Issue Type: Bug
>          Components: Documentation, Spark Core
>    Affects Versions: 2.4.3
>            Reporter: Marcelo Masiero Vanzin
>            Assignee: Marcelo Masiero Vanzin
>            Priority: Minor
>              Labels: release-notes
>             Fix For: 3.0.0
>
>
> The option to control the listen socket backlog for RPC and shuffle servers 
> is not documented in our public docs.
> The only piece of documentation is in a Java class, and even that 
> documentation is incorrect:
> {code}
>   /** Requested maximum length of the queue of incoming connections. Default 
> -1 for no backlog. */
>   public int backLog() { return conf.getInt(SPARK_NETWORK_IO_BACKLOG_KEY, 
> -1); }
> {code}
> The default value actual causes the default value from the JRE to be used, 
> which is 50 according to the docs.



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