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https://issues.apache.org/jira/browse/BOOKKEEPER-765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14026252#comment-14026252
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Ivan Kelly commented on BOOKKEEPER-765:
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bq. Will this creates problem like, my server started with older version and 
later point of time unfortunately when tries to execute few statements(which 
needs higher version) the process can crash or unresponsive ?.

This won't happen. I assume you're talking about the bytecodes in the jvm 
version? We explicitly tell it to generate 1.6 version byte code. This will not 
run on anything below 1.6. Anything above will run it exactly the same.

> bookkeeper script should fall back to java in path if JAVA_HOME is not set
> --------------------------------------------------------------------------
>
>                 Key: BOOKKEEPER-765
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-765
>             Project: Bookkeeper
>          Issue Type: Bug
>          Components: bookkeeper-server
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>            Priority: Blocker
>             Fix For: 4.3.0, 4.2.3
>
>         Attachments: 
> 0001-BOOKKEEPER-765-bookkeeper-script-should-fall-b.trunk.patch, 
> 0001-BOOKKEEPER-765-bookkeeper-script-should-fall-back-to.patch
>
>
> The current behaviour requires JAVA_HOME to be set, which isn't set by 
> default on all machines. So machines on which bookkeeper ran fine, no longer 
> work.
> Solution is to fallback to java in path is JAVA_HOME not set.



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