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https://issues.apache.org/jira/browse/HDFS-8552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14577559#comment-14577559
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Xiaoyu Yao commented on HDFS-8552:
----------------------------------
I think we could consolidate the fix together, please update the title as
appropriate.
> Fix hdfs namenode CLI usage message and its document
> ----------------------------------------------------
>
> Key: HDFS-8552
> URL: https://issues.apache.org/jira/browse/HDFS-8552
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Xiaoyu Yao
> Assignee: Brahma Reddy Battula
> Attachments: HDFS-8552.patch
>
>
> The usage message from code does not match with the one documented.
> 1. "java NameNode" should be "hdfs namenode"
> 2. Many of options are not documented.
> Usage message from code:
> {code}
> private static final String USAGE = "Usage: java NameNode ["
> + StartupOption.BACKUP.getName() + "] | \n\t["
> + StartupOption.CHECKPOINT.getName() + "] | \n\t["
> + StartupOption.FORMAT.getName() + " ["
> + StartupOption.CLUSTERID.getName() + " cid ] ["
> + StartupOption.FORCE.getName() + "] ["
> + StartupOption.NONINTERACTIVE.getName() + "] ] | \n\t["
> + StartupOption.UPGRADE.getName() +
> " [" + StartupOption.CLUSTERID.getName() + " cid]" +
> " [" + StartupOption.RENAMERESERVED.getName() + "<k-v pairs>] ] |
> \n\t["
> + StartupOption.UPGRADEONLY.getName() +
> " [" + StartupOption.CLUSTERID.getName() + " cid]" +
> " [" + StartupOption.RENAMERESERVED.getName() + "<k-v pairs>] ] |
> \n\t["
> + StartupOption.ROLLBACK.getName() + "] | \n\t["
> + StartupOption.ROLLINGUPGRADE.getName() + " "
> + RollingUpgradeStartupOption.getAllOptionString() + " ] | \n\t["
> + StartupOption.IMPORT.getName() + "] | \n\t["
> + StartupOption.INITIALIZESHAREDEDITS.getName() + "] | \n\t["
> + StartupOption.BOOTSTRAPSTANDBY.getName() + "] | \n\t["
> + StartupOption.RECOVER.getName() + " [ "
> + StartupOption.FORCE.getName() + "] ] | \n\t["
> + StartupOption.METADATAVERSION.getName() + " ] "
> + " ]";
> {code}
> Usage from document:
> hdfs namenode [-backup] |
> [-checkpoint] |
> [-format [-clusterid cid ] [-force] [-nonInteractive] ] |
> [-upgrade [-clusterid cid] [-renameReserved<k-v pairs>] ] |
> [-upgradeOnly [-clusterid cid] [-renameReserved<k-v pairs>] ] |
> [-rollback] |
> [-rollingUpgrade <downgrade |rollback> ] |
> [-finalize] |
> [-importCheckpoint] |
> [-initializeSharedEdits] |
> [-bootstrapStandby] |
> [-recover [-force] ] |
> [-metadataVersion ]
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