: instance, which is based on Solr SVN r815830. This patch did not seem : to solve the hang problem; once I reenabled JMX, then the process : would hang at the same spot, i.e. right after
Yeah, I believe the "hang" is really orthoginal to the SearchComponents issue and seems to be because of the types of Statistics ReplicationHandler wants to expose and the way certain JMX implementaions deal with a newly registered MBean -- the changes made in SOLR-1427 (which yonik has since reverted) just exposed this problem by registering hte MBeans at an inopportune time. I'd apprecaite it if anyone who observed this problem in their version of Java could try out this patch... https://issues.apache.org/jira/secure/attachment/12420151/SOLR-1427.afterlatch.patch ...with both the ReplicationHandler and JMX turned on. The patch can be applied to the current trunk (where yonik reverted the previous code that caused the hang) If things still lock up even with that patch, a full threaddump would be much apprecaited. -Hoss
