Eric Bus created SOLR-5579: ------------------------------ Summary: Leader stops processing collection-work-queue after failed collection reload Key: SOLR-5579 URL: https://issues.apache.org/jira/browse/SOLR-5579 Project: Solr Issue Type: Bug Affects Versions: 4.5.1 Environment: Debian Linux 6.0 running on VMWare Using embedded SOLR Jetty. Reporter: Eric Bus
I've been experiencing the same problem a few times now. My leader in /overseer_elect/leader stops processing the collection queue at /overseer/collection-queue-work. The queue will build up and it will trigger an alert in my monitoring tool. I haven't been able to pinpoint the reason that the leader stops, but usually I kill the leader node to trigger a leader election. The new node will pick up the queue. And this is where the problems start. When the new leader is processing the queue and picks up a reload for a shard without an active leader, the queue stops. It keeps repeating the message that there is no active leader for the shard. But a new leader is never elected: {quote} ERROR - 2013-12-24 14:43:40.390; org.apache.solr.common.SolrException; Error while trying to recover. core=magento_349_shard1_replica1:org.apache.solr.common.SolrException: No registered leader was found, collection:magento_349 slice:shar d1 at org.apache.solr.common.cloud.ZkStateReader.getLeaderRetry(ZkStateReader.java:482) at org.apache.solr.common.cloud.ZkStateReader.getLeaderRetry(ZkStateReader.java:465) at org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:317) at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:219) ERROR - 2013-12-24 14:43:40.391; org.apache.solr.cloud.RecoveryStrategy; Recovery failed - trying again... (7) core=magento_349_shard1_replica1 INFO - 2013-12-24 14:43:40.391; org.apache.solr.cloud.RecoveryStrategy; Wait 256.0 seconds before trying to recover again (8) {quote} Is the leader election in some way connected to the collection queue? If so, can this be a deadlock, because it won't elect until the reload is complete? -- This message was sent by Atlassian JIRA (v6.1.5#6160) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org