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Date: Tue, 05 Apr 2011 11:25:12 +0200
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Tomcat calling into itself
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Pid wrote:
> On 4/5/11 7:56 AM, Michael McCutcheon wrote:
>> Hello,
>>
>> I have a java webapp that is going to make calls to Solr.  Both the
>> webapp and Solr will be on the same server.
> 
> OK.  Note it's a good idea to tell us what exact OS, Java, Tomcat
> versions you're running.
> 
> 
>> I have heard that it is not recommended to run the webapp on the same
>> tomcat instance as Solr, due to potential threading issues of tomcat
>> calling into itself.
> 
> Oh dear.  That's a quite vague description, so it's really impossible to
> say what it means.  Can you elaborate?
> 
> 
>> Would it be best to run 2 instances of tomcat (1 for webapp, another for
>> Solr)?
> 
> NEEDINFO
> 
> 
>> Or is there a way to configure tomcat so that the webapp and solr can
>> run in the same tomcat instance, reliably and without threading or
>> performance issues?
> 
> No idea.  If Solr has threading issues (I've not heard of any) you'd
> best ask that community.  Tomcat is not an OS or JVM, it doesn't manage
> all the threads in your app.
> 
> 
Right.   Plus, it is not really possible to answer these questions here, considering how 
many different types of configurations are possible with Solr and Lucene.  The OP really 
needs to ask on the Solr/Lucene lists, for what would be the most appropriate 
configuration for *his* use case.


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