[YARN-10095] Fix help message for yarn rmadmin

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Assignee: Xieming Li
• Reporter: Xieming Li
• Created: 20/Jan/20 06:08
• Updated: 26/Feb/20 02:16

Description

(This issue is identified by aajisaka in https://issues.apache.org/jira/browse/HADOOP-16753)

The help message of yarn rmadmin seems broken.

Current:  

$ yarn rmadmin -Dyarn.resourcemanager.ha.enabled=true -help -refreshNodesResources
Usage: yarn rmadmin [-refreshNodesResources]

Generic options supported are:
-conf <configuration file>        specify an application configuration file
-D <property=value>               define a value for a given property
-fs <file:///|hdfs://namenode:port> specify default filesystem URL to use, overrides 'fs.defaultFS' property from configurations.
-jt <local|resourcemanager:port>  specify a ResourceManager
-files <file1,...>                specify a comma-separated list of files to be copied to the map reduce cluster
-libjars <jar1,...>               specify a comma-separated list of jar files to be included in the classpath
-archives <archive1,...>          specify a comma-separated list of archives to be unarchived on the compute machines

The general command line syntax is:
command [genericOptions] [commandOptions]

 

Expected: 

$ yarn rmadmin -Dyarn.resourcemanager.ha.enabled=true -help -refreshNodesResources 
Usage: yarn rmadmin [-refreshNodesResources]

   -refreshNodesResources: Refresh resources of NodeManagers at the ResourceManager.    <==== HERE

Generic options supported are:
-conf <configuration file>        specify an application configuration file
-D <property=value>               define a value for a given property
-fs <file:///|hdfs://namenode:port> specify default filesystem URL to use, overrides 'fs.defaultFS' property from configurations.
-jt <local|resourcemanager:port>  specify a ResourceManager
-files <file1,...>                specify a comma-separated list of files to be copied to the map reduce cluster
-libjars <jar1,...>               specify a comma-separated list of jar files to be included in the classpath
-archives <archive1,...>          specify a comma-separated list of archives to be unarchived on the compute machines

The general command line syntax is: 
command [genericOptions] [commandOptions]