Shalin Shekhar Mangar created SOLR-7869:
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Summary: Overseer does not handle BadVersionException correctly
Key: SOLR-7869
URL: https://issues.apache.org/jira/browse/SOLR-7869
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 5.2.1
Reporter: Shalin Shekhar Mangar
Assignee: Shalin Shekhar Mangar
Fix For: 5.3, Trunk
If the /clusterstate.json is modified externally then the Overseer can go into
an infinite loop upon a BadVersionException alternately trying to execute main
queue and then the work queue:
{code}
ERROR - 2015-08-04 18:49:56.224; [ ]
org.apache.solr.cloud.Overseer$ClusterStateUpdater; Exception in Overseer work
queue loop
org.apache.zookeeper.KeeperException$BadVersionException: KeeperErrorCode =
BadVersion for /clusterstate.json
at org.apache.zookeeper.KeeperException.create(KeeperException.java:115)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.setData(ZooKeeper.java:1270)
at
org.apache.solr.common.cloud.SolrZkClient$8.execute(SolrZkClient.java:362)
at
org.apache.solr.common.cloud.SolrZkClient$8.execute(SolrZkClient.java:359)
at
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:61)
at
org.apache.solr.common.cloud.SolrZkClient.setData(SolrZkClient.java:359)
at
org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:180)
at
org.apache.solr.cloud.overseer.ZkStateWriter.enqueueUpdate(ZkStateWriter.java:67)
at
org.apache.solr.cloud.Overseer$ClusterStateUpdater.processQueueItem(Overseer.java:286)
at
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:168)
at java.lang.Thread.run(Thread.java:745)
INFO - 2015-08-04 18:49:56.224; [ ]
org.apache.solr.cloud.Overseer$ClusterStateUpdater; processMessage: queueSize:
1, message = {
"operation":"state",
"state":"down",
"base_url":"http://127.0.1.1:7574/solr";,
"core":"test_shard1_replica1",
"roles":null,
"node_name":"127.0.1.1:7574_solr",
"shard":null,
"collection":"test",
"core_node_name":"core_node1"} current state version: 9
INFO - 2015-08-04 18:49:56.224; [ ]
org.apache.solr.cloud.overseer.ReplicaMutator; Update state numShards=null
message={
"operation":"state",
"state":"down",
"base_url":"http://127.0.1.1:7574/solr";,
"core":"test_shard1_replica1",
"roles":null,
"node_name":"127.0.1.1:7574_solr",
"shard":null,
"collection":"test",
"core_node_name":"core_node1"}
INFO - 2015-08-04 18:49:56.224; [ ]
org.apache.solr.cloud.overseer.ReplicaMutator; shard=shard1 is already
registered
ERROR - 2015-08-04 18:49:56.225; [ ]
org.apache.solr.cloud.Overseer$ClusterStateUpdater; Exception in Overseer main
queue loop
org.apache.zookeeper.KeeperException$BadVersionException: KeeperErrorCode =
BadVersion for /clusterstate.json
at org.apache.zookeeper.KeeperException.create(KeeperException.java:115)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.setData(ZooKeeper.java:1270)
at
org.apache.solr.common.cloud.SolrZkClient$8.execute(SolrZkClient.java:362)
at
org.apache.solr.common.cloud.SolrZkClient$8.execute(SolrZkClient.java:359)
at
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:61)
at
org.apache.solr.common.cloud.SolrZkClient.setData(SolrZkClient.java:359)
at
org.apache.solr.cloud.overseer.ZkStateWriter.writePendingUpdates(ZkStateWriter.java:180)
at
org.apache.solr.cloud.overseer.ZkStateWriter.enqueueUpdate(ZkStateWriter.java:67)
at
org.apache.solr.cloud.Overseer$ClusterStateUpdater.processQueueItem(Overseer.java:286)
at
org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:213)
at java.lang.Thread.run(Thread.java:745)
INFO - 2015-08-04 18:49:56.225; [ ]
org.apache.solr.common.cloud.ZkStateReader; Updating data for gettingstarted to
ver 8
{code}
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