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https://issues.apache.org/jira/browse/ZOOKEEPER-905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930191#action_12930191
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Patrick Hunt commented on ZOOKEEPER-905:
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Hi Nicholas, actually the issue is that you need to use svn to create the diff 
(hudson doesn't like the fact that it doesn't know what .orig file is)

See this page for instructions (basically checkout svn, make change, do "svn 
diff")
http://wiki.apache.org/hadoop/ZooKeeper/HowToContribute

> enhance zkServer.sh for easier zookeeper automation-izing
> ---------------------------------------------------------
>
>                 Key: ZOOKEEPER-905
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-905
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Nicholas Harteau
>            Assignee: Nicholas Harteau
>            Priority: Minor
>             Fix For: 3.4.0
>
>         Attachments: zkServer.sh.diff
>
>
> zkServer.sh is good at starting zookeeper and figuring out the right options 
> to pass along.
> unfortunately if you want to wrap zookeeper startup/shutdown in any 
> significant way, you have to reimplement a bunch of the logic there.
> the attached patch addresses a couple simple issues:
> 1. add a 'start-foreground' option to zkServer.sh - this allows things that 
> expect to manage a foregrounded process (daemontools, launchd, etc) to use 
> zkServer.sh instead of rolling their own to launch zookeeper
> 2. add a 'print-cmd' option to zkServer.sh - rather than launching zookeeper 
> from the script, just give me the command you'd normally use to exec 
> zookeeper.  I found this useful when writing automation to start/stop 
> zookeeper as part of smoke testing zookeeper-based applications
> 3. Deal more gracefully with supplying alternate configuration files to 
> zookeeper - currently the script assumes all config files reside in 
> $ZOOCFGDIR - also useful for smoke testing
> 4. communicate extra info ("JMX enabled") about zookeeper on STDERR rather 
> than STDOUT (necessary for #2)
> 5. fixes an issue on macos where readlink doesn't have the '-f' option.

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