[SOLR-4744] Version conflict error during shard split test

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.3
• Fix Version/s: 4.3.1, 4.4
• Component/s: SolrCloud
• Assignee: Shalin Shekhar Mangar
• Reporter: Shalin Shekhar Mangar
• Created: 21/Apr/13 08:33
• Updated: 18/Jun/13 16:52
• Resolved: 06/Jun/13 18:59

Description

ShardSplitTest fails sometimes with the following error:

[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.861; org.apache.solr.cloud.Overseer$ClusterStateUpdater; Update shard state invoked for collection: collection1
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.861; org.apache.solr.cloud.Overseer$ClusterStateUpdater; Update shard state shard1 to inactive
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.861; org.apache.solr.cloud.Overseer$ClusterStateUpdater; Update shard state shard1_0 to active
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.861; org.apache.solr.cloud.Overseer$ClusterStateUpdater; Update shard state shard1_1 to active
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.873; org.apache.solr.update.processor.LogUpdateProcessor; [collection1] webapp= path=/update params={wt=javabin&version=2} {add=[169 (1432319507166134272)]} 0 2
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.877; org.apache.solr.common.cloud.ZkStateReader$2; A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 5)
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.877; org.apache.solr.common.cloud.ZkStateReader$2; A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 5)
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.877; org.apache.solr.common.cloud.ZkStateReader$2; A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 5)
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.877; org.apache.solr.common.cloud.ZkStateReader$2; A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 5)
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.877; org.apache.solr.common.cloud.ZkStateReader$2; A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 5)
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.877; org.apache.solr.common.cloud.ZkStateReader$2; A cluster state change: WatchedEvent state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred - updating... (live nodes size: 5)
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.884; org.apache.solr.update.processor.LogUpdateProcessor; [collection1_shard1_1_replica1] webapp= path=/update params={distrib.from=http://127.0.0.1:41028/collection1/&update.distrib=FROMLEADER&wt=javabin&distrib.from.parent=shard1&version=2} {} 0 1
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.885; org.apache.solr.update.processor.LogUpdateProcessor; [collection1] webapp= path=/update params={distrib.from=http://127.0.0.1:41028/collection1/&update.distrib=FROMLEADER&wt=javabin&distrib.from.parent=shard1&version=2} {add=[169 (1432319507173474304)]} 0 2
[junit4:junit4]   1> ERROR - 2013-04-14 19:05:26.885; org.apache.solr.common.SolrException; shard update error StdNode: http://127.0.0.1:41028/collection1_shard1_1_replica1/:org.apache.solr.common.SolrException: version conflict for 169 expected=1432319507173474304 actual=-1
[junit4:junit4]   1> 	at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:404)
[junit4:junit4]   1> 	at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:181)
[junit4:junit4]   1> 	at org.apache.solr.update.SolrCmdDistributor$1.call(SolrCmdDistributor.java:332)
[junit4:junit4]   1> 	at org.apache.solr.update.SolrCmdDistributor$1.call(SolrCmdDistributor.java:306)
[junit4:junit4]   1> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
[junit4:junit4]   1> 	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
[junit4:junit4]   1> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
[junit4:junit4]   1> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
[junit4:junit4]   1> 	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
[junit4:junit4]   1> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
[junit4:junit4]   1> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[junit4:junit4]   1> 	at java.lang.Thread.run(Thread.java:679)
[junit4:junit4]   1> 
[junit4:junit4]   1> INFO  - 2013-04-14 19:05:26.886; org.apache.solr.update.processor.DistributedUpdateProcessor; try and ask http://127.0.0.1:41028 to recover

The failure is hard to reproduce and very timing sensitive. These kind of failures have always been seen right after "updateshardstate" action.

Issue Links

• is related to: SOLR-3755 shard splitting