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https://issues.apache.org/jira/browse/HDFS-7184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14157444#comment-14157444
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Allen Wittenauer commented on HDFS-7184:
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This won't work as intended.
In order to get something to run as a daemon, it needs to have the daemon=true
clause in the hdfs script. (A bug that also exists for balancer.)
At least in trunk, adding custom start/stop scripts isn't really something we
should do anymore. At some point, we'll EOL the scripts in sbin. hdfs
--daemon start / hdfs --daemon stop mover (after daemon=true is configured)
will give you daemonization support without the need for a separate wrapper
script.
Another bug is that the script has a function called usage. It should be
hadoop_usage. (This bug also exists in start-balancer.sh as well.)
> Add start and stop scripts to run data migration tool as a daemon
> -----------------------------------------------------------------
>
> Key: HDFS-7184
> URL: https://issues.apache.org/jira/browse/HDFS-7184
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover, scripts
> Reporter: Benoy Antony
> Assignee: Benoy Antony
> Priority: Minor
> Attachments: HDFS-7184.patch
>
>
> Just like balancer, it is sometimes required to run data migration tool in a
> daemon mode.
> It will be useful to have scripts equivalent to start-balancer.sh and
> stop-balancer.sh for data migration tool also.
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