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https://issues.apache.org/jira/browse/HDFS-10391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166507#comment-16166507
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Eric Payne commented on HDFS-10391:
-----------------------------------
[~arpitagarwal] and [~GergelyNovak]
After this change, my datanode won't talk to my namenode in my pseudo cluster
by default:
{code}
2017-09-13 14:04:52,393 [Thread-23] WARN datanode.DataNode: Problem connecting
to server: hostname.x.y.com:9840
{code}
> 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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