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https://issues.apache.org/jira/browse/ACCUMULO-1321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13642053#comment-13642053
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John Vines commented on ACCUMULO-1321:
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That is one of the errors I have hit. Depending on what version of java you're
using and/or when it triggers, it can cause a core dump from libzip. This can
be mitigated if you do a cp to a temp dir and then mv, because that operation
is more atomic.
> Dynamic Classloader lost jars
> -----------------------------
>
> Key: ACCUMULO-1321
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1321
> Project: Accumulo
> Issue Type: Bug
> Reporter: John Vines
> Fix For: 1.5.0
>
>
> 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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