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https://issues.apache.org/jira/browse/HDFS-12588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16212732#comment-16212732
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Hadoop QA commented on HDFS-12588:
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-12588 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12893268/HDFS-12588-HDFS-7240.004.patch
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| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/21759/console |
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This message was automatically generated.
> Use GenericOptionsParser for scm and ksm daemon
> -----------------------------------------------
>
> Key: HDFS-12588
> URL: https://issues.apache.org/jira/browse/HDFS-12588
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-7240
> Reporter: Elek, Marton
> Assignee: Elek, Marton
> Attachments: HDFS-12588-HDFS-7240.001.patch,
> HDFS-12588-HDFS-7240.002.patch, HDFS-12588-HDFS-7240.003.patch,
> HDFS-12588-HDFS-7240.004.patch
>
>
> Most of the hadoop commands use the GenericOptionsParser to use some common
> CLI arguments (such as -conf or -D or -libjars to define configuration/modify
> configuration/modify classpath).
> I suggest to use the same common options to scm and ksm daemons as well, as:
> 1. It allows to use the existing cluster management tools/scripts as the
> daemons could be configured in the same way as namenode and datanode
> 2. It follows the convention from the hadoop common.
> 3. It's easier to develop from the IDE (I start the ksm/scm/datanode/namenode
> from intellij but I need to add the configuration to the classpath. With
> -conf I would able to use external configration.)
> I found one problem during the implementation. Until now we used `hdfs scm`
> command both for the daemon and the scm command line client. If there were no
> parameters the daemon is started, with parameters the cli is started. The
> help listed only the damon.
> The -conf (GenericOptionParser) could be used only if we separate the scm and
> scmcli commands. But any way, it's a more clean and visible if we have
> separated `hdfs scm` and `hdfs scmcli`.
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