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https://issues.apache.org/jira/browse/SOLR-3022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13183791#comment-13183791
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Erick Erickson commented on SOLR-3022:
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Hmmm, this didn't fix the problem for me in trunk. I defined a bogus
requestHandler like this:
<requestHandler name="/eoe" class="eoe.solr.XmlUpdateRequestHandler">
</requestHandler>
and got the same annoying "No cores were created" error message with no clue
why.
But if I put similar logic in RequestHandlers, around line 175 (the catch block
in initHandlersFromConfig) I get useful traces. Or even just use
SolrException.log rather than logOnce.
But this behavior is different than 3x and I'm wondering if anyone has a clue
why things were changed and whether the change was intentional. I looked over
some back copies of these files, and they haven't changed in a looong time with
the one caveat that the error is getting re-thrown in 4x but just falls out in
3x.
So I'm looking for someone to weigh in on what the right thing to do is. I'm
well aware that logging *everything* makes logging almost useless, but this
behavior is suppressing useful information.
BTW, I ran into this same problem with a plugin I was fooling around with a
while ago, I'm glad you're pursuing it, thanks.
> AbstractPluginLoader does not log caught exceptions
> ---------------------------------------------------
>
> Key: SOLR-3022
> URL: https://issues.apache.org/jira/browse/SOLR-3022
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: James Dyer
> Priority: Trivial
> Fix For: 4.0
>
> Attachments: SOLR-3022.patch
>
>
> I was setting up a new 4.x environment but forgot to put a custom Analyzer in
> the classpath. Unfortunately AbstractPluginLoader didn't log the exception
> and it took a long time for me to figure out why "No cores were created".
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