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From "Robert Joseph Evans (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8227) Allow RPC to limit ephemeral port range.
Date Thu, 05 Apr 2012 18:30:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247468#comment-13247468
] 

Robert Joseph Evans commented on HADOOP-8227:
---------------------------------------------

Yes, that is the exact issue.  As part of this change I modified the RpcEngine interface.
 In trunk and branch-2 all implementations of RpcEngine are in common, but in 0.23 ProtoOverHadoopRpcEngine
is in MapReduce so the fix has to be split.  I think it is simpler to get the code changes
approved and into trunk/branch-2 first and then put in the branch-23 patch at once, instead
of splitting them up.
                
> Allow RPC to limit ephemeral port range.
> ----------------------------------------
>
>                 Key: HADOOP-8227
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8227
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.23.2
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Blocker
>         Attachments: HADOOP-8227-trunk.txt
>
>
> This is a sub task of MAPREDUCE-4079.  For security reasons we would like to limit the
range of ports that are used when some RPC servers select a port.

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