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From "Aaron T. Myers (Reopened) (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (HDFS-2979) HA: Balancer should use logical uri for creating failover proxy with HA enabled.
Date Thu, 01 Mar 2012 06:52:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aaron T. Myers reopened HDFS-2979:
----------------------------------


On second thought, I'm going to revert this change and fix the issue with NN conf mutation
by modifying the test TestBalancerWithHANameNodes test case. The conf mutation issue should
be fixed in a more general way.
                
> HA: Balancer should use logical uri for creating failover proxy with HA enabled.
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-2979
>                 URL: https://issues.apache.org/jira/browse/HDFS-2979
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: balancer, hdfs client
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Uma Maheswara Rao G
>            Assignee: Aaron T. Myers
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: HDFS-2979-HDFS-1623.patch, HDFS-2979-HDFS-1623.patch, HDFS-2979-HDFS-1623.patch,
HDFS-2979.patch
>
>
> Presently Balancer uses real URI for creating the failover proxy.
> Since the failover proxy checks for uri consistency, we should pass logical uri for creating
failover proxy instead of instead of real URI. Presently will work only with default port.
> java.io.IOException: Port 49832 specified in URI hdfs://127.0.0.1:49832 but host '127.0.0.1'
is a logical (HA) namenode and does not use port information.
> 	at org.apache.hadoop.hdfs.HAUtil.getFailoverProxyProviderClass(HAUtil.java:224)
> 	at org.apache.hadoop.hdfs.HAUtil.createFailoverProxy(HAUtil.java:247)
> 	at org.apache.hadoop.hdfs.server.balancer.NameNodeConnector.<init>(NameNodeConnector.java:80)
> 	at org.apache.hadoop.hdfs.server.balancer.Balancer.run(Balancer.java:1401) 

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