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From "Yonik Seeley" <>
Subject Re: Availability Issues
Date Mon, 08 Oct 2007 18:58:24 GMT
On 10/8/07, David Whalen <> wrote:
> > Have you taken a thread dump to see what is going on?
> We can't do it b/c during the unresponsive time we can't access
> the admin site (/solr/admin) at all.  I don't know how to do a
> thread dump via the command line....

kill -3 <pid_of_jvm_running_solr>

Start with the thread dump.
I bet it's multiple queries piling up around some synchronization
points in lucene (sometimes caused by multiple threads generating the
same big filter that isn't yet cached).


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