[jira] [Created] (SOLR-6056) Zookeeper crash JVM stack OOM because of recover strategy

["Raintung Li (JIRA)" <ji...@apache.org>]

Raintung Li created SOLR-6056:
---------------------------------

             Summary: Zookeeper crash JVM stack OOM because of recover strategy 
                 Key: SOLR-6056
                 URL: https://issues.apache.org/jira/browse/SOLR-6056
             Project: Solr
          Issue Type: Bug
          Components: SolrCloud
    Affects Versions: 4.6
         Environment: Two linux server, 65G, 16 core cup
20 collections, every collection has one shard two replica 
one zookeeper
            Reporter: Raintung Li


Some errors"org.apache.solr.common.SolrException: Error opening new searcher. exceeded limit of maxWarmingSearchers=2, try again later", that occur distributedupdateprocessor trig the core admin recover process.
That means every update request will send the core admin recover request.
(see the code DistributedUpdateProcessor.java doFinish())

The terrible thing is CoreAdminHandler will start a new thread to publish the recover status and start recovery. Threads increase very quickly, and stack OOM , Overseer can't handle a lot of status update , zookeeper node for  /overseer/queue/qn-0000125553 increase more than 40 thousand in two minutes.

At the last zookeeper crash. 
The worse thing is queue has to much nodes in the zookeeper, the cluster can't publish the right status because only one overseer work, I have to start three threads to clear the queue nodes. The cluster doesn't work normal near 30 minutes...





--
This message was sent by Atlassian JIRA
(v6.2#6252)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org