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https://issues.apache.org/jira/browse/ACCUMULO-1593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13759310#comment-13759310
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Christopher Tubbs commented on ACCUMULO-1593:
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I think it makes sense to ensure the name and the id are both UTF-8 encoded
when put in ZK. Forcing this may break some fringe systems, but at the benefit
of actually defining previously undefined behavior. I think it's a reasonable
risk.
As for the UUID being stored as bytes from the numbers... I don't think it's a
big deal. More importantly, though, there's a reason not to change it: Mike is
right that it would affect upgrades... but it might be worse than that...
because we don't store version information in the ZK mapping from name to
instanceID. So, newer versions and older versions installed simultaneously may
conflict when trying to read this mapping.
> Looking up instanceName in ZK doesn't use consistent encoding
> -------------------------------------------------------------
>
> Key: ACCUMULO-1593
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1593
> Project: Accumulo
> Issue Type: Bug
> Reporter: Christopher Tubbs
> Assignee: Ted Yu
> Labels: newbie
> Fix For: 1.6.0
>
> Attachments: accumulo-1593-v1.txt, accumulo-1593-v2.txt
>
>
> We need to be more careful about encoding and decoding instance names and IDs
> in zookeeper. They should use UTF-8 explicitly, right now, they use the JVM
> default, which can differ between JVM runs (even between Initialize and
> start-all).
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