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From "Ayush Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12826) Document Saying the RPC port, But it's required IPC port in Balancer Document.
Date Mon, 04 Feb 2019 03:59:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16759608#comment-16759608

Ayush Saxena commented on HDFS-12826:

Thanx everyone for the discussion.
{quote}Would it be a bit more precise to take the other way: changing ipc to rpc instead?
Do you mean to say , we must change the implementation logic to take rpc instead of ipc. If
that is so I guess that it will bring out incompatibility too and moreover it seems to be
wrong only at the document side , In the dfsadmin help it is ipc port only.
    "\t[-printTopology]\n" +
      "\t[-refreshNamenodes datanode_host:ipc_port]\n" +
      "\t[-getVolumeReport datanode_host:ipc_port]\n" +
I guess changing in the doc should be well enough.

> Document Saying the RPC port, But it's required IPC port in Balancer Document.
> ------------------------------------------------------------------------------
>                 Key: HDFS-12826
>                 URL: https://issues.apache.org/jira/browse/HDFS-12826
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer &amp; mover, documentation
>    Affects Versions: 3.0.0-beta1
>            Reporter: Harshakiran Reddy
>            Assignee: usharani
>            Priority: Minor
>         Attachments: HDFS-12826.patch
> In {{Adding a new Namenode to an existing HDFS cluster}} , refreshNamenodes command required
IPC port but in Documentation it's saying the RPC port.
> http://hadoop.apache.org/docs/r3.0.0-beta1/hadoop-project-dist/hadoop-hdfs/Federation.html#Balancer
> {noformat} 
> bin>:~/hdfsdata/HA/install/hadoop/datanode/bin> ./hdfs dfsadmin -refreshNamenodes
> refreshNamenodes: Unknown protocol: org.apache.hadoop.hdfs.protocol.ClientDatanodeProtocol
> bin.:~/hdfsdata/HA/install/hadoop/datanode/bin> ./hdfs dfsadmin -refreshNamenodes
> Usage: hdfs dfsadmin [-refreshNamenodes datanode-host:ipc_port]
> bin>:~/hdfsdata/HA/install/hadoop/datanode/bin> ./hdfs dfsadmin -refreshNamenodes
> bin>:~/hdfsdata/HA/install/hadoop/datanode/bin>
> {noformat} 

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