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From "Biju Nair (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7810) Datanode registration process fails in hadoop 2.6
Date Wed, 18 Feb 2015 19:48:11 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Biju Nair updated HDFS-7810:
----------------------------
    Description: 
When a new DN is added to the cluster, the registration process fails. The following are the
steps followed.

- Install and start a new DN
- Add entry for the DN in the NN {{/etc/hosts}} file

DN log shows that the registration process failed

- Tried to restart DN with the same result

Since all the DNs have multiple NW interface, we are using the following {{hdfs-site.xml}}
property, instead of listing all the {{dfs.datanode.*.address}} properties.

{code:xml}
  <property>
    <name>dfs.datanode.dns.interface</name>
    <value>eth2</value>
  </property>
{code}

- Restarting the NN resolves the issue with registration which is not desired. 
- Adding the {{dfs.datanode.*.address}} properties seem to resolve DN registration process
without NN restart. But this is a different behavior compared to *hadoop 2.2*. Is there a
reason for the change?

  was:
When a new DN is added to the cluster, the registration process fails. The following are the
steps followed.

- Install and start a new DN
- Add entry for the DN in the {{/etc/hosts}} file

DN log shows that the registration process failed

- Tried to restart DN with the same result

Since all the DNs have multiple NW interface, we are using the following {{hdfs-site.xml}}
property, instead of listing all the {{dfs.datanode.*.address}} properties.

{code:xml}
  <property>
    <name>dfs.datanode.dns.interface</name>
    <value>eth2</value>
  </property>
{code}

- Restarting the NN resolves the issue with registration which is not desired. 
- Adding the {{dfs.datanode.*.address}} properties seem to resolve DN registration process
without NN restart. But this is a different behavior compared to *hadoop 2.2*. Is there a
reason for the change?


> Datanode registration process fails in hadoop 2.6 
> --------------------------------------------------
>
>                 Key: HDFS-7810
>                 URL: https://issues.apache.org/jira/browse/HDFS-7810
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode, namenode
>    Affects Versions: 2.6.0
>         Environment: ubuntu 12
>            Reporter: Biju Nair
>              Labels: hadoop
>
> When a new DN is added to the cluster, the registration process fails. The following
are the steps followed.
> - Install and start a new DN
> - Add entry for the DN in the NN {{/etc/hosts}} file
> DN log shows that the registration process failed
> - Tried to restart DN with the same result
> Since all the DNs have multiple NW interface, we are using the following {{hdfs-site.xml}}
property, instead of listing all the {{dfs.datanode.*.address}} properties.
> {code:xml}
>   <property>
>     <name>dfs.datanode.dns.interface</name>
>     <value>eth2</value>
>   </property>
> {code}
> - Restarting the NN resolves the issue with registration which is not desired. 
> - Adding the {{dfs.datanode.*.address}} properties seem to resolve DN registration process
without NN restart. But this is a different behavior compared to *hadoop 2.2*. Is there a
reason for the change?



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