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Posted to solr-user@lucene.apache.org by Otis Gospodnetic <ot...@yahoo.com> on 2011/11/07 20:34:21 UTC

Solr's JMX domain names

Hello,

While working on our Performance Monitoring SaaS for Solr [1] we've noticed Solr MBeans are registered under a different JMX domain name, depending on the Solr version and on the servlet container.  In some cases the domain name is "solr", while in others it is "solr/".  But we also saw further inconsistencies.  For example, we have 2 Solr 1.4.0 instances on the same version of the servlet container, and one has "solr", while the other has "solr/" domain name.

Does anyone know what controls this?

Thanks,

Otis

[1] http://sematext.com/spm/solr-performance-monitoring/index.html (currently free)

Re: Solr's JMX domain names

Posted by Chris Hostetter <ho...@fucit.org>.

: depending on the Solr version and on the servlet container.  In some 
: cases the domain name is "solr", while in others it is "solr/".  But we 
: also saw further inconsistencies.  For example, we have 2 Solr 1.4.0 
: instances on the same version of the servlet container, and one has 
: "solr", while the other has "solr/" domain name.

I believe the default naming is "solr/${corename}" -- but if you are 
seeing "solr" by itself in some cases that may be an edge case when using 
the legacy single core mode (not certain ... could maybe be a bug)

there is also the "rootName" attribute on the <jmx/> solrconfig.xml 
setting which can override the defailt -- maybe some of your indexes are 
explicitly settting this to "solr" ?

https://issues.apache.org/jira/browse/SOLR-1843

-Hoss