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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10391) Always enable NameNode service RPC port
Date Thu, 14 Sep 2017 16:50:02 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166581#comment-16166581
] 

Daryn Sharp commented on HDFS-10391:
------------------------------------

-1.  It's completely unnecessary for this to be incompatible, plus it's overly complex for
what it does and includes comments essentially saying "this isn't correct".  Why wasn't the
default in the conf simply changed so that I can change it back if I don't want the service
port?

This release note states:
bq. The NameNode service RPC port is enabled by default

It should be: "A separate NameNode service RPC port is mandatory".

bq.  The NameNode should always be setup with a service RPC port so that it does not have
to be explicitly enabled by an administrator.

We don't need to hold the hand of an admin while forcibly removing the option to use a single
port.

> Always enable NameNode service RPC port
> ---------------------------------------
>
>                 Key: HDFS-10391
>                 URL: https://issues.apache.org/jira/browse/HDFS-10391
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, namenode
>            Reporter: Arpit Agarwal
>            Assignee: Gergely Novák
>              Labels: Incompatible
>             Fix For: 3.0.0-beta1
>
>         Attachments: HDFS-10391.001.patch, HDFS-10391.002.patch, HDFS-10391.003.patch,
HDFS-10391.004.patch, HDFS-10391.005.patch, HDFS-10391.006.patch, HDFS-10391.007.patch, HDFS-10391.008.patch,
HDFS-10391.009.patch, HDFS-10391.010.patch, HDFS-10391.v5-v6-delta.patch
>
>
> The NameNode should always be setup with a service RPC port so that it does not have
to be explicitly enabled by an administrator.



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