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From "Masahiro Tanaka (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-9246) NPE when executing a command yarn node -status or -states without additional arguments
Date Fri, 01 Feb 2019 00:03:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16757817#comment-16757817
] 

Masahiro Tanaka commented on YARN-9246:
---------------------------------------

Thanks [~suma.shivaprasad] for reviewing this. I uploaded a new patch ( just fixing checkstyle
issue)

> NPE when executing a command yarn node -status or -states without additional arguments
> --------------------------------------------------------------------------------------
>
>                 Key: YARN-9246
>                 URL: https://issues.apache.org/jira/browse/YARN-9246
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: client
>            Reporter: Masahiro Tanaka
>            Assignee: Masahiro Tanaka
>            Priority: Minor
>         Attachments: YARN-9246.001.patch, YARN-9246.002.patch
>
>
> yarn node command should not print NPE even if there are some missing arguments.
> {code}
> ubuntu@ip-172-31-0-78:~/hadoop-3.3.0-SNAPSHOT$ ./bin/yarn node -states
> Missing argument for options
> usage: node
>  -all Works with -list to list all nodes.
>  -help Displays help for all commands.
>  -list List all running nodes. Supports optional use of
>  -states to filter nodes based on node state, all -all
>  to list all nodes, -showDetails to display more
>  details about each node.
>  -showDetails Works with -list to show more details about each node.
>  -states <States> Works with -list to filter nodes based on input
>  comma-separated list of node states. The valid node
>  state can be one of the following:
>  NEW,RUNNING,UNHEALTHY,DECOMMISSIONED,LOST,REBOOTED,DEC
>  OMMISSIONING,SHUTDOWN.
>  -status <NodeId> Prints the status report of the node.
> Exception in thread "main" java.lang.NullPointerException
>  at org.apache.hadoop.yarn.client.cli.YarnCLI.stop(YarnCLI.java:75)
>  at org.apache.hadoop.yarn.client.cli.NodeCLI.main(NodeCLI.java:63)
> ubuntu@ip-172-31-0-78:~/hadoop-3.3.0-SNAPSHOT$ ./bin/yarn node -status
> Missing argument for options
> usage: node
>  -all Works with -list to list all nodes.
>  -help Displays help for all commands.
>  -list List all running nodes. Supports optional use of
>  -states to filter nodes based on node state, all -all
>  to list all nodes, -showDetails to display more
>  details about each node.
>  -showDetails Works with -list to show more details about each node.
>  -states <States> Works with -list to filter nodes based on input
>  comma-separated list of node states. The valid node
>  state can be one of the following:
>  NEW,RUNNING,UNHEALTHY,DECOMMISSIONED,LOST,REBOOTED,DEC
>  OMMISSIONING,SHUTDOWN.
>  -status <NodeId> Prints the status report of the node.
> Exception in thread "main" java.lang.NullPointerException
>  at org.apache.hadoop.yarn.client.cli.YarnCLI.stop(YarnCLI.java:75)
>  at org.apache.hadoop.yarn.client.cli.NodeCLI.main(NodeCLI.java:63)
> ubuntu@ip-172-31-0-78:~/hadoop-3.3.0-SNAPSHOT$
> {code}



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