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https://issues.apache.org/jira/browse/HDFS-2732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13177479#comment-13177479
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Todd Lipcon commented on HDFS-2732:
-----------------------------------
For me, start-dfs.sh actually already works, since it uses the GetConf tool
which prints out all of the NN addresses in the cluster based on the
configuration. Does it not work for you?
> Add support for the standby in the bin scripts
> ----------------------------------------------
>
> Key: HDFS-2732
> URL: https://issues.apache.org/jira/browse/HDFS-2732
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Eli Collins
> Assignee: Eli Collins
>
> We need to update the bin scripts to support SBNs. Two ideas:
> Modify start-dfs.sh to start another copy of the NN if HA is configured. We
> could introduce a file similar to masters (2NN hosts) called standbys which
> lists the SBN hosts, and start-dfs.sh would automatically make the NN it
> starts active (and leave the NNs listed in standby as is).
> Or simpler, we could just provide a start-namenode.sh script that a user can
> run to start the SBN on another host themselves. The user would manually tell
> the other NN to be active via HAAdmin (or start-dfs.sh could do that
> automatically, ie assume the NN it starts should be the primary).
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