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https://issues.apache.org/jira/browse/HDFS-2894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201113#comment-13201113
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Todd Lipcon commented on HDFS-2894:
-----------------------------------
+1
> HA: automatically determine the nameservice Id if only one nameservice is
> configured
> ------------------------------------------------------------------------------------
>
> Key: HDFS-2894
> URL: https://issues.apache.org/jira/browse/HDFS-2894
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Eli Collins
> Assignee: Eli Collins
> Attachments: hdfs-2894.txt, hdfs-2894.txt
>
>
> The SecondaryNameNode should log a message and refuse to start if HA is
> enabled since the StandbyNode checkpoints by default and IIRC we have not yet
> enabled the ability to have multiple checkpointers in the NN.
> On the HA branch the 2NN does not currently start from start-dfs.sh because
> getconf -secondarynamenodes claims the http-address is not configured even
> though it is, though this seems like a bug, in branch 23 getconf will
> correctly return localhost:50090.
> {noformat}
> <property>
> <name>dfs.namenode.secondary.http-address</name>
> <value>localhost:50090</value>
> </property>
> </configuration>
> hadoop-0.24.0-SNAPSHOT $ ./bin/hdfs getconf -secondarynamenodes
> Incorrect configuration: secondary namenode address
> dfs.namenode.secondary.http-address is not configured.
> {noformat}
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