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https://issues.apache.org/jira/browse/YARN-5820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15647175#comment-15647175
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Ajith S commented on YARN-5820:
-------------------------------
using apache HelpFormatter wraps the character after certain line length, so
that <NodeId> is automatically sent to next line after formatting, hence the
test case is modified to accommodate this
> yarn node CLI help should be clearer
> ------------------------------------
>
> Key: YARN-5820
> URL: https://issues.apache.org/jira/browse/YARN-5820
> Project: Hadoop YARN
> Issue Type: Bug
> Components: client
> Affects Versions: 2.6.0
> Reporter: Grant Sohn
> Assignee: Ajith S
> Priority: Trivial
> Attachments: YARN-5820.01.patch, YARN-5820.02.patch,
> YARN-5820.03.patch, YARN-5820.04.patch
>
>
> Current message is:
> {noformat}
> usage: node
> -all Works with -list to list all nodes.
> -list List all running nodes. Supports optional use of
> -states to filter nodes based on node state, all -all
> to list all nodes.
> -states <States> Works with -list to filter nodes based on input
> comma-separated list of node states.
> -status <NodeId> Prints the status report of the node.
> {noformat}
> It should be either this:
> {noformat}
> usage: yarn node [-list [-states <States>|-all] | -status <NodeId>]
> -all Works with -list to list all nodes.
> -list List all running nodes. Supports optional use of
> -states to filter nodes based on node state, all -all
> to list all nodes.
> -states <States> Works with -list to filter nodes based on input
> comma-separated list of node states.
> -status <NodeId> Prints the status report of the node.
> {noformat}
> or that.
> {noformat}
> usage: yarn node -list [-states <States>|-all]
> yarn node -status <NodeId>
> -all Works with -list to list all nodes.
> -list List all running nodes. Supports optional use of
> -states to filter nodes based on node state, all -all
> to list all nodes.
> -states <States> Works with -list to filter nodes based on input
> comma-separated list of node states.
> -status <NodeId> Prints the status report of the node.
> {noformat}
> The latter is the least ambiguous.
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