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From Shawn Heisey <>
Subject Re: Random OOM Exceptions
Date Thu, 14 Aug 2014 16:45:59 GMT
On 8/14/2014 10:06 AM, Scott Rankin wrote:
> My question was actually more about what in Solr might cause the
> server to suddenly go from a very consistent heap size of 300-400 MB
> to over 2 GB in a matter of minutes with no changes in traffic. I get
> why the VM is crashing, I just don’t know why Solr is suddenly going nuts.

That's nearly impossible to answer.  Chances are that something has
changed about the requests that Solr is receiving and now it's required
to do something that it wasn't before, something that uses a lot of heap

The other likely possibilities are:

* There's a bug in your solr version or in some software component that
you are using with Solr.  That can include the Java virtual machine, the
servlet container, and/or any third-party Solr components.

* You were running on the hairy edge of heap usage already, and
something (a traffic increase, a slight change to your requests) pushed
you over the edge into OutOfMemory.


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