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https://issues.apache.org/jira/browse/HDFS-9928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15189573#comment-15189573
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Masatake Iwasaki commented on HDFS-9928:
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{noformat}
hdfs dfsadmin [GENERIC_OPTIONS]
[-report [-live] [-dead] [-decommissioning]]
[-safemode enter | leave | get | wait | forceExit]
- [-saveNamespace]
+ [-saveNamespace [-beforeShutdown]]
{noformat}
Adding {{-beforeShutdown}} (by HDFS-6353) was trunk-only change. We should keep
this as is if target is 2.8.0.
{noformat}
-| `-reconfig` \<datanode \|...\> \<host:ipc\_port\> \<start\|status\> | Start
reconfiguration or get the status of an ongoing reconfiguration. The second
parameter specifies the node type. Currently, only reloading DataNode's
configuration is supported. |
+| `-reconfig` \<datanode \|namenode\> \<host:ipc\_port\>
\<start\|status\|properties\> | Starts reconfiguration or gets the status of an
ongoing reconfiguration, or gets a list of reconfigurable properties. The
second parameter specifies the node type. |
{noformat}
Similar to above, fix version of HDFS-9094 is 2.9.0.
> Make HDFS commands guide up to date
> -----------------------------------
>
> Key: HDFS-9928
> URL: https://issues.apache.org/jira/browse/HDFS-9928
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Affects Versions: 3.0.0
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Labels: documentation, supportability
> Attachments: HDFS-9928.001.patch
>
>
> A few HDFS subcommands and options are missing in the documentation.
> # envvars: display computed Hadoop environment variables
> I also noticed (in HDFS-9927) that a few OIV options are missing, and I'll be
> looking for other missing options as well.
> Filling this JIRA to fix them all.
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