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From Ryan McKinley <>
Subject Re: Post-SOLR215/SOLR350 singleton issue
Date Fri, 09 Nov 2007 21:58:57 GMT
> It is not related to the singleton, AFAIK, as I tested it with a simple
> multhread app, and I always got the object created one time
> (singletonObject = new getInstance()), while other calls just receive
> the already created object.
> While if the handler try to call getInstance(), the first time (the
> first time /for each core/, and here is the point), init a brand new
> object (other call to getInstance() inside the same core works fine)

So if I understand correctly, you are saying that the singleton object 
within RequestHandler instance for a given SolrCore is *not* shared 
across cores.

What happens if you register multiple RequestHandlers within the same 
core using the same RequestHandler class?  do they share the same 
singleton instance?

If so, I'd suggest looking into class loader issues -- does anything 
change if you bundle your custom classes in the .war file? -- but that 
seems like a stretch.


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