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https://issues.apache.org/jira/browse/HDFS-5147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13754930#comment-13754930
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Arpit Gupta commented on HDFS-5147:
-----------------------------------
Currently dfsadmin has the following commands
{code}
Note: Administrative commands can only be run as the HDFS superuser.
[-report]
[-safemode enter | leave | get | wait]
[-allowSnapshot <snapshotDir>]
[-disallowSnapshot <snapshotDir>]
[-saveNamespace]
[-rollEdits]
[-restoreFailedStorage true|false|check]
[-refreshNodes]
[-finalizeUpgrade]
[-metasave filename]
[-refreshServiceAcl]
[-refreshUserToGroupsMappings]
[-refreshSuperUserGroupsConfiguration]
[-printTopology]
[-refreshNamenodes datanodehost:port]
[-deleteBlockPool datanode-host:port blockpoolId [force]]
[-setQuota <quota> <dirname>...<dirname>]
[-clrQuota <dirname>...<dirname>]
[-setSpaceQuota <quota> <dirname>...<dirname>]
[-clrSpaceQuota <dirname>...<dirname>]
[-setBalancerBandwidth <bandwidth in bytes per second>]
[-fetchImage <local directory>]
{code}
> Certain dfsadmin commands such as safemode do not interact with the active
> namenode in ha setup
> -----------------------------------------------------------------------------------------------
>
> Key: HDFS-5147
> URL: https://issues.apache.org/jira/browse/HDFS-5147
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.1.0-beta
> Reporter: Arpit Gupta
>
> There are certain commands in dfsadmin return the status of the first
> namenode specified in the configs rather than interacting with the active
> namenode
> For example. Issue
> hdfs dfsadmin -safemode get
> and it will return the status of the first namenode in the configs rather
> than the active namenode.
> I think all dfsadmin commands should determine which is the active namenode
> do the operation on it.
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