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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1321) Dynamic Classloader lost jars
Date Tue, 11 Jun 2013 20:15:20 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13680620#comment-13680620
] 

John Vines commented on ACCUMULO-1321:
--------------------------------------

Well, this is very similar to that case though. Source code changed, new jar, and instead
of copying it in, it's a delete, move, rename. Without the rename it's prone to be permanently
unaware of the class existances.
                
> Dynamic Classloader lost jars
> -----------------------------
>
>                 Key: ACCUMULO-1321
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1321
>             Project: Accumulo
>          Issue Type: Sub-task
>            Reporter: John Vines
>            Priority: Blocker
>             Fix For: 1.5.0
>
>         Attachments: ACCUMULO-1321.patch
>
>
> We have a table setup that uses some custom iterators. We ran an MR job against it without
issues. We then ran the job immediately after the first one wrapped and 2 of my tservers errored
with ClassNotFoundException, even though it ran just fine before.
> Unfortunately we don't have a stack trace (to see if it was breaking differently in the
VFSClassLoader), nor a convenient way to recreate currently. We're working on reproducing
it in order to get more information.

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