Hi, This may be related to SOLR-1711 and/or SOLR-1543, however I read the archives and the issues and think I am running code where these issues have been fixed.
I am running a snapshot of Solr4 at revision 1040465, which was about Feb 2011 IIRC, and I am testing recovery of the client when the master Solr instance in a cluster dies. The indexer uses a StreamingUpdateSolrServer. When the master Solr instance dies the client commits fail with a java.net.ConnectException on the commit operation which bubbles back up the stack to the SolrJ client. The runner threads retry several times and eventually fail, emptying the queue. When the master Solr instance comes back online, I see the runner threads re-trying and I think succeeding, but the SolrJ client thread ends up in this state (forever). There are no runner threads (in my case pool-2-thread-x) present in the thread dump. "IndexerQueueDispatch" daemon prio=10 tid=0x00007f87949e0000 nid=0x7f68 waiting on condition [0x00007f87928a7000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000b2277390> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:158) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987) at java.util.concurrent.LinkedBlockingQueue.put(LinkedBlockingQueue.java:306) at org.apache.solr.client.solrj.impl.StreamingUpdateSolrServer.request(StreamingUpdateSolrServer.java:218) at org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:105) at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:50) at org.sakaiproject.nakamura.solr.ContentEventListener.batchedEventRun(ContentEventListener.java:379) at org.sakaiproject.nakamura.solr.ContentEventListener.run(ContentEventListener.java:285) at java.lang.Thread.run(Thread.java:662) I can reproduce with ease. I suspect using a CommonsHttpSolrServer will fix the problem, as it will make indexing single threaded on the client side, which I would like to avoid if possible. Is this something that has been seen before now? Is there a fix in a later revision? Thanks Ian (btw, since this is snapshot code I thought the dev list was the best place to ask the question, please say if I should re-post on the users list. Also, if its been fixed already, please just post a pointer or something to search for and tell me to go away and read it :)) https://issues.apache.org/jira/browse/SOLR-1711 https://issues.apache.org/jira/browse/SOLR-1543 --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org