Re: Solr cloud hangs, log4j contention issue observed

2015-09-02 Thread Arnon Yogev
Code)) 4XESTACKTRACEat java/lang/Thread.run(Thread.java:804(Compiled Code)) 3XMTHREADINFO3 No native callstack available for this thread From: Shawn Heisey <apa...@elyograg.org> To: solr-user@lucene.apache.org Date: 01/09/2015 06:09 PM Subject: Re: Solr

Solr cloud hangs, log4j contention issue observed

2015-09-01 Thread Arnon Yogev
We have a Solr cloud (4.7) consisting of 5 servers. At some point we noticed that one of the servers had a very high CPU and was not responding. A few minutes later, the other 4 servers were responding very slowly. A restart was required. Looking at the Solr logs, we mainly saw symptoms, i.e.

Re: Solr cloud hangs, log4j contention issue observed

2015-09-01 Thread Shawn Heisey
On 9/1/2015 12:53 AM, Arnon Yogev wrote: > We have a Solr cloud (4.7) consisting of 5 servers. > At some point we noticed that one of the servers had a very high CPU and > was not responding. A few minutes later, the other 4 servers were > responding very slowly. A restart was required. > Looking