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From "Tanping Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2086) If the include hosts list contains host name, after restarting namenode, datanodes registrant is denied
Date Tue, 21 Jun 2011 21:19:47 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tanping Wang updated HDFS-2086:
-------------------------------

    Attachment: HDFS-2086.3.patch

Upload a new patch to fix the failed unit test case.

> If the include hosts list contains host name, after restarting namenode, datanodes registrant
is denied 
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-2086
>                 URL: https://issues.apache.org/jira/browse/HDFS-2086
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Tanping Wang
>            Assignee: Tanping Wang
>             Fix For: 0.23.0
>
>         Attachments: HDFS-2086.2.patch, HDFS-2086.3.patch, HDFS-2086.patch
>
>
> As the title describes the problem:  if the include host list contains host name, after
restarting namenodes, the datanodes registrant is denied by namenodes.  This is because after
namenode is restarted, the still alive data node will try to register itself with the namenode
and it identifies itself with its *IP address*.  However, namenode only allows all the hosts
in its hosts list to registrant and all of them are hostnames. So namenode would deny the
datanode registration.

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