[ 
https://issues.apache.org/jira/browse/SOLR-5407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13809799#comment-13809799
 ] 

Nathan Neulinger commented on SOLR-5407:
----------------------------------------

Digging further, it looks like it all keys around some sort of communications 
problem with zookeeper - looks like it all started at the end of this log 
snippet below (reverse time order) when it's reporting that 'Our previous 
ZooKeeper session was expired. Attempting to reconnect to recover relationship 
with ZooKeeper'. 



2013-10-29T16:25:50.344Z        Going to wait for coreNodeName: core_node2, 
state: down, checkLive: null, onlyIfLeader: null
2013-10-29T16:25:50.329Z        publishing 
core=myappqa-master_v8_shard1_replica1 state=down
2013-10-29T16:25:50.329Z        Creating new http client, 
config:maxConnections=128&maxConnectionsPerHost=32&followRedirects=false
2013-10-29T16:25:50.328Z        Waited coreNodeName: core_node1, state: down, 
checkLive: null, onlyIfLeader: null for: 1 seconds.
2013-10-29T16:25:49.884Z        A cluster state change: WatchedEvent 
state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred 
- updating... (live nodes size: 1)
2013-10-29T16:25:49.825Z        Updating cloud state from ZooKeeper...
2013-10-29T16:25:49.825Z        Update state numShards=1 message={
"operation":"state",
"state":"down",
"base_url":"http://10.170.2.54:8983/solr";,
"core":"hiv...
2013-10-29T16:25:49.324Z        Going to wait for coreNodeName: core_node1, 
state: down, checkLive: null, onlyIfLeader: null
2013-10-29T16:25:49.309Z        Creating new http client, 
config:maxConnections=128&maxConnectionsPerHost=32&followRedirects=false
2013-10-29T16:25:49.308Z        publishing 
core=myappqa-master_v6_shard1_replica2 state=down
2013-10-29T16:25:49.308Z        Waited coreNodeName: core_node1, state: down, 
checkLive: null, onlyIfLeader: null for: 2 seconds.
2013-10-29T16:25:48.302Z        A cluster state change: WatchedEvent 
state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred 
- updating... (live nodes size: 1)
2013-10-29T16:25:48.239Z        Updating cloud state from ZooKeeper...
2013-10-29T16:25:48.239Z        Update state numShards=1 message={
"operation":"state",
"state":"down",
"base_url":"http://10.170.2.54:8983/solr";,
"core":"hiv...
2013-10-29T16:25:47.304Z        Going to wait for coreNodeName: core_node1, 
state: down, checkLive: null, onlyIfLeader: null
2013-10-29T16:25:47.289Z        Creating new http client, 
config:maxConnections=128&maxConnectionsPerHost=32&followRedirects=false
2013-10-29T16:25:47.289Z        publishing 
core=myappstaging-profile_v7_shard1_replica1 state=down
2013-10-29T16:25:47.287Z        Waited coreNodeName: core_node2, state: down, 
checkLive: null, onlyIfLeader: null for: 2 seconds.
2013-10-29T16:25:46.469Z        A cluster state change: WatchedEvent 
state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred 
- updating... (live nodes size: 1)
2013-10-29T16:25:46.406Z        Update state numShards=1 message={
"operation":"state",
"state":"down",
"base_url":"http://10.170.2.54:8983/solr";,
"core":"hiv...
2013-10-29T16:25:45.925Z        Updating cloud state from ZooKeeper...
2013-10-29T16:25:45.286Z        Going to wait for coreNodeName: core_node2, 
state: down, checkLive: null, onlyIfLeader: null
2013-10-29T16:25:45.270Z        publishing 
core=myappstaging-profile_v8_shard1_replica1 state=down
2013-10-29T16:25:45.270Z        Creating new http client, 
config:maxConnections=128&maxConnectionsPerHost=32&followRedirects=false
2013-10-29T16:25:45.269Z        Waited coreNodeName: core_node2, state: down, 
checkLive: null, onlyIfLeader: null for: 2 seconds.
2013-10-29T16:25:45.039Z        A cluster state change: WatchedEvent 
state:SyncConnected type:NodeDataChanged path:/clusterstate.json, has occurred 
- updating... (live nodes size: 1)
2013-10-29T16:25:44.994Z        makePath: 
/collections/myappproduction-production_v8/leaders/shard1
2013-10-29T16:25:44.994Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappproduction-production_v8_shard1_replica1/ 
shard1
2013-10-29T16:25:44.994Z        
http://10.136.6.24:8983/solr/myappproduction-production_v8_shard1_replica1/ has 
no replicas
2013-10-29T16:25:44.991Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappproduction-production_v8_shard1_replica1/
2013-10-29T16:25:44.991Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.991Z        Running the leader process for shard shard1
2013-10-29T16:25:44.991Z        I may be the new leader - try and sync
2013-10-29T16:25:44.991Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.991Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.940Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-feature-completion_v9_shard1_replica1/
 shard1
2013-10-29T16:25:44.940Z        makePath: 
/collections/myappstaging-feature-completion_v9/leaders/shard1
2013-10-29T16:25:44.939Z        
http://10.136.6.24:8983/solr/myappstaging-feature-completion_v9_shard1_replica1/
 has no replicas
2013-10-29T16:25:44.939Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.939Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.939Z        I may be the new leader - try and sync
2013-10-29T16:25:44.939Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-feature-completion_v9_shard1_replica1/
2013-10-29T16:25:44.938Z        Running the leader process for shard shard1
2013-10-29T16:25:44.938Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.880Z        makePath: 
/collections/myappstaging-profile_v7/leaders/shard1
2013-10-29T16:25:44.873Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-profile_v7_shard1_replica2/ shard1
2013-10-29T16:25:44.872Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-profile_v7_shard1_replica2/
2013-10-29T16:25:44.872Z        Stopping recovery for 
zkNodeName=core_node2core=myappstaging-profile_v7_shard1_replica2
2013-10-29T16:25:44.872Z        I may be the new leader - try and sync
2013-10-29T16:25:44.872Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.872Z        
http://10.136.6.24:8983/solr/myappstaging-profile_v7_shard1_replica2/ has no 
replicas
2013-10-29T16:25:44.872Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.872Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.863Z        Running the leader process for shard shard1
2013-10-29T16:25:44.809Z        makePath: 
/collections/myappqa-master_v6/leaders/shard1
2013-10-29T16:25:44.808Z        Stopping recovery for 
zkNodeName=core_node2core=myappqa-master_v6_shard1_replica1
2013-10-29T16:25:44.808Z        
http://10.136.6.24:8983/solr/myappqa-master_v6_shard1_replica1/ has no replicas
2013-10-29T16:25:44.808Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.808Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappqa-master_v6_shard1_replica1/ shard1
2013-10-29T16:25:44.808Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.808Z        I may be the new leader - try and sync
2013-10-29T16:25:44.808Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappqa-master_v6_shard1_replica1/
2013-10-29T16:25:44.808Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.807Z        Running the leader process for shard shard1
2013-10-29T16:25:44.749Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-feature-completion_v8_shard1_replica1/
 shard1
2013-10-29T16:25:44.749Z        makePath: 
/collections/myappstaging-feature-completion_v8/leaders/shard1
2013-10-29T16:25:44.749Z        
http://10.136.6.24:8983/solr/myappstaging-feature-completion_v8_shard1_replica1/
 has no replicas
2013-10-29T16:25:44.747Z        I may be the new leader - try and sync
2013-10-29T16:25:44.747Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.747Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.747Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-feature-completion_v8_shard1_replica1/
2013-10-29T16:25:44.747Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.746Z        Running the leader process for shard shard1
2013-10-29T16:25:44.694Z        makePath: 
/collections/myappproduction-production_v9/leaders/shard1
2013-10-29T16:25:44.693Z        
http://10.136.6.24:8983/solr/myappproduction-production_v9_shard1_replica2/ has 
no replicas
2013-10-29T16:25:44.693Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappproduction-production_v9_shard1_replica2/ 
shard1
2013-10-29T16:25:44.692Z        I may be the new leader - try and sync
2013-10-29T16:25:44.692Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.692Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.692Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappproduction-production_v9_shard1_replica2/
2013-10-29T16:25:44.692Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.691Z        Running the leader process for shard shard1
2013-10-29T16:25:44.647Z        makePath: 
/collections/myappstaging-alpha4_v9/leaders/shard1
2013-10-29T16:25:44.647Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-alpha4_v9_shard1_replica1/ shard1
2013-10-29T16:25:44.647Z        
http://10.136.6.24:8983/solr/myappstaging-alpha4_v9_shard1_replica1/ has no 
replicas
2013-10-29T16:25:44.632Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.632Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-alpha4_v9_shard1_replica1/
2013-10-29T16:25:44.632Z        I may be the new leader - try and sync
2013-10-29T16:25:44.632Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.631Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.630Z        Running the leader process for shard shard1
2013-10-29T16:25:44.572Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-master_v9_shard1_replica1/ shard1
2013-10-29T16:25:44.572Z        makePath: 
/collections/myappstaging-master_v9/leaders/shard1
2013-10-29T16:25:44.571Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.571Z        
http://10.136.6.24:8983/solr/myappstaging-master_v9_shard1_replica1/ has no 
replicas
2013-10-29T16:25:44.571Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.571Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-master_v9_shard1_replica1/
2013-10-29T16:25:44.571Z        I may be the new leader - try and sync
2013-10-29T16:25:44.571Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.568Z        Running the leader process for shard shard1
2013-10-29T16:25:44.511Z        makePath: 
/collections/myappstaging-preetalpha4_v9/leaders/shard1
2013-10-29T16:25:44.511Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v9_shard1_replica2/ shard1
2013-10-29T16:25:44.511Z        
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v9_shard1_replica2/ has 
no replicas
2013-10-29T16:25:44.510Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.509Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.509Z        Running the leader process for shard shard1
2013-10-29T16:25:44.509Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v9_shard1_replica2/
2013-10-29T16:25:44.509Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.509Z        I may be the new leader - try and sync
2013-10-29T16:25:44.450Z        makePath: 
/collections/collection1/leaders/shard1
2013-10-29T16:25:44.450Z        I am the new leader: 
http://10.136.6.24:8983/solr/collection1/ shard1
2013-10-29T16:25:44.444Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:44.444Z        http://10.136.6.24:8983/solr/collection1/ has 
no replicas
2013-10-29T16:25:44.444Z        Sync Success - now sync replicas to me
2013-10-29T16:25:44.444Z        Sync replicas to 
http://10.136.6.24:8983/solr/collection1/
2013-10-29T16:25:44.444Z        I may be the new leader - try and sync
2013-10-29T16:25:44.443Z        Checking if I should try and be the leader.
2013-10-29T16:25:44.434Z        Running the leader process for shard shard1
2013-10-29T16:25:44.418Z        A cluster state change: WatchedEvent 
state:SyncConnected type:NodeChildrenChanged path:/live_nodes, has occurred - 
updating... (live nodes size: 1)
2013-10-29T16:25:44.418Z        Updating live nodes... (1)
2013-10-29T16:25:43.715Z        makePath: 
/collections/myappqa-master_v9/leaders/shard1
2013-10-29T16:25:43.714Z        Checking if I should try and be the leader.
2013-10-29T16:25:43.714Z        I may be the new leader - try and sync
2013-10-29T16:25:43.714Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappqa-master_v9_shard1_replica1/ shard1
2013-10-29T16:25:43.714Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:43.714Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappqa-master_v9_shard1_replica1/
2013-10-29T16:25:43.714Z        
http://10.136.6.24:8983/solr/myappqa-master_v9_shard1_replica1/ has no replicas
2013-10-29T16:25:43.714Z        Sync Success - now sync replicas to me
2013-10-29T16:25:43.713Z        Running the leader process for shard shard1
2013-10-29T16:25:43.654Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-alpha3_v8_shard1_replica2/ shard1
2013-10-29T16:25:43.654Z        makePath: 
/collections/myappstaging-alpha3_v8/leaders/shard1
2013-10-29T16:25:43.654Z        
http://10.136.6.24:8983/solr/myappstaging-alpha3_v8_shard1_replica2/ has no 
replicas
2013-10-29T16:25:43.653Z        I may be the new leader - try and sync
2013-10-29T16:25:43.653Z        Checking if I should try and be the leader.
2013-10-29T16:25:43.653Z        Sync Success - now sync replicas to me
2013-10-29T16:25:43.653Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-alpha3_v8_shard1_replica2/
2013-10-29T16:25:43.653Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:43.652Z        Running the leader process for shard shard1
2013-10-29T16:25:43.591Z        makePath: 
/collections/myappqa-master_v8/leaders/shard1
2013-10-29T16:25:43.591Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappqa-master_v8_shard1_replica2/ shard1
2013-10-29T16:25:43.591Z        
http://10.136.6.24:8983/solr/myappqa-master_v8_shard1_replica2/ has no replicas
2013-10-29T16:25:43.575Z        I may be the new leader - try and sync
2013-10-29T16:25:43.575Z        Checking if I should try and be the leader.
2013-10-29T16:25:43.575Z        Sync Success - now sync replicas to me
2013-10-29T16:25:43.575Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:43.575Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappqa-master_v8_shard1_replica2/
2013-10-29T16:25:43.574Z        Running the leader process for shard shard1
2013-10-29T16:25:43.505Z        makePath: 
/collections/myappstaging-profile_v8/leaders/shard1
2013-10-29T16:25:43.498Z        
http://10.136.6.24:8983/solr/myappstaging-profile_v8_shard1_replica2/ has no 
replicas
2013-10-29T16:25:43.498Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-profile_v8_shard1_replica2/
2013-10-29T16:25:43.498Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-profile_v8_shard1_replica2/ shard1
2013-10-29T16:25:43.498Z        Sync Success - now sync replicas to me
2013-10-29T16:25:43.497Z        Stopping recovery for 
zkNodeName=core_node1core=myappstaging-profile_v8_shard1_replica2
2013-10-29T16:25:43.497Z        I may be the new leader - try and sync
2013-10-29T16:25:43.497Z        Checking if I should try and be the leader.
2013-10-29T16:25:43.497Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:43.489Z        Running the leader process for shard shard1
2013-10-29T16:25:43.472Z        Update state numShards=1 message={
"operation":"state",
"state":"down",
"base_url":"http://10.170.2.54:8983/solr";,
"core":"hiv...
2013-10-29T16:25:43.456Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v9_shard1_replica2/ shard1
2013-10-29T16:25:43.456Z        makePath: 
/collections/myappstaging-alpha4-adam_v9/leaders/shard1
2013-10-29T16:25:43.456Z        [myappstaging-alpha4-adam_v9_shard1_replica1] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:43.440Z        Sync Success - now sync replicas to me
2013-10-29T16:25:43.440Z        PeerSync: 
core=myappstaging-alpha4-adam_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr DONE. sync succeeded
2013-10-29T16:25:43.440Z        
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v9_shard1_replica2/ has 
no replicas
2013-10-29T16:25:43.440Z        PeerSync: 
core=myappstaging-alpha4-adam_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr Our versions are newer. 
ourLowThreshold=14495694169781043...
2013-10-29T16:25:43.439Z        PeerSync: 
core=myappstaging-alpha4-adam_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr Received 17 versions from 
10.170.2.54:8983/solr/myappstag...
2013-10-29T16:25:43.330Z        Updating cloud state from ZooKeeper...
2013-10-29T16:25:43.322Z        PeerSync: 
core=myappstaging-alpha4-adam_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr START 
replicas=[http://10.170.2.54:8983/solr/myappstaging-...
2013-10-29T16:25:43.321Z        I may be the new leader - try and sync
2013-10-29T16:25:43.321Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v9_shard1_replica2/
2013-10-29T16:25:43.321Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:43.321Z        Checking if I should try and be the leader.
2013-10-29T16:25:43.314Z        Running the leader process for shard shard1
2013-10-29T16:25:43.314Z        Process current queue of collection creations
2013-10-29T16:25:43.314Z        Starting to work on the main queue
2013-10-29T16:25:43.264Z        Going to wait for coreNodeName: core_node2, 
state: down, checkLive: null, onlyIfLeader: null
2013-10-29T16:25:43.262Z        Creating new http client, 
config:maxConnections=128&maxConnectionsPerHost=32&followRedirects=false
2013-10-29T16:25:43.247Z        Overseer 
(id=234546968080679008-10.136.6.24:8983_solr-n_0000000021) starting
2013-10-29T16:25:43.247Z        makePath: /overseer_elect/leader
2013-10-29T16:25:43.203Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr DONE. sync succeeded
2013-10-29T16:25:43.203Z        [myappstaging-preetalpha4_v8_shard1_replica1] 
webapp=/solr path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v8_shard1_repl...
2013-10-29T16:25:43.203Z        makePath: 
/collections/myappstaging-preetalpha4_v8/leaders/shard1
2013-10-29T16:25:43.189Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr Our versions are newer. 
ourLowThreshold=14490017764527308...
2013-10-29T16:25:43.189Z        
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v8_shard1_replica2/: sync 
completed with http://10.170.2.54:8983/solr/myappstaging-preetalpha4_...
2013-10-29T16:25:43.189Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v8_shard1_replica2/ shard1
2013-10-29T16:25:43.187Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr Received 10 versions from 
10.136.6.24:8983/solr/myappstag...
2013-10-29T16:25:43.187Z        [myappstaging-preetalpha4_v8_shard1_replica2] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:43.187Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr START 
replicas=[http://10.136.6.24:8983/solr/myappstaging-...
2013-10-29T16:25:43.187Z        [myappstaging-preetalpha4_v8_shard1_replica1] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:43.187Z        
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v8_shard1_replica2/: try 
and ask http://10.170.2.54:8983/solr/myappstaging-preetalpha4_v8_shard1...
2013-10-29T16:25:43.187Z        Sync Success - now sync replicas to me
2013-10-29T16:25:43.170Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr DONE. sync succeeded
2013-10-29T16:25:43.170Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr Received 10 versions from 
10.170.2.54:8983/solr/myappstag...
2013-10-29T16:25:43.170Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr Our versions are newer. 
ourLowThreshold=14490017764527308...
2013-10-29T16:25:43.100Z        PeerSync: 
core=myappstaging-preetalpha4_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr START 
replicas=[http://10.170.2.54:8983/solr/myappstaging-...
2013-10-29T16:25:43.100Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-preetalpha4_v8_shard1_replica2/
2013-10-29T16:25:43.100Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:43.100Z        I may be the new leader - try and sync
2013-10-29T16:25:43.100Z        Checking if I should try and be the leader.
2013-10-29T16:25:43.099Z        Running the leader process for shard shard1
2013-10-29T16:25:43.056Z        makePath: 
/collections/myappstaging-alpha3_v7/leaders/shard1
2013-10-29T16:25:43.044Z        [myappstaging-alpha3_v7_shard1_replica2] 
webapp=/solr path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-alpha3_v7_shard1_replica1/&;...
2013-10-29T16:25:43.044Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica2 url=http://10.170.2.54:8983/solr 
DONE. sync succeeded
2013-10-29T16:25:43.041Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-alpha3_v7_shard1_replica1/ shard1
2013-10-29T16:25:43.041Z        
http://10.136.6.24:8983/solr/myappstaging-alpha3_v7_shard1_replica1/: sync 
completed with http://10.170.2.54:8983/solr/myappstaging-alpha3_v7_shard1_...
2013-10-29T16:25:43.041Z        [myappstaging-alpha3_v7_shard1_replica1] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=2} st...
2013-10-29T16:25:43.040Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica2 url=http://10.170.2.54:8983/solr 
Our versions are newer. ourLowThreshold=1448183627488690176 ot...
2013-10-29T16:25:43.040Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica2 url=http://10.170.2.54:8983/solr 
Received 98 versions from 10.136.6.24:8983/solr/myappstaging-a...
2013-10-29T16:25:43.027Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica2 url=http://10.170.2.54:8983/solr 
START replicas=[http://10.136.6.24:8983/solr/myappstaging-alpha...
2013-10-29T16:25:43.011Z        [myappstaging-alpha3_v7_shard1_replica2] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=2} st...
2013-10-29T16:25:42.989Z        
http://10.136.6.24:8983/solr/myappstaging-alpha3_v7_shard1_replica1/: try and 
ask http://10.170.2.54:8983/solr/myappstaging-alpha3_v7_shard1_replica2/...
2013-10-29T16:25:42.989Z        Sync Success - now sync replicas to me
2013-10-29T16:25:42.988Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica1 url=http://10.136.6.24:8983/solr 
DONE. sync succeeded
2013-10-29T16:25:42.982Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica1 url=http://10.136.6.24:8983/solr 
Our versions are newer. ourLowThreshold=1448183627488690176 ot...
2013-10-29T16:25:42.982Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica1 url=http://10.136.6.24:8983/solr 
Received 98 versions from 10.170.2.54:8983/solr/myappstaging-a...
2013-10-29T16:25:42.955Z        PeerSync: 
core=myappstaging-alpha3_v7_shard1_replica1 url=http://10.136.6.24:8983/solr 
START replicas=[http://10.170.2.54:8983/solr/myappstaging-alpha...
2013-10-29T16:25:42.954Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-alpha3_v7_shard1_replica1/
2013-10-29T16:25:42.954Z        Stopping recovery for 
zkNodeName=core_node1core=myappstaging-alpha3_v7_shard1_replica1
2013-10-29T16:25:42.953Z        I may be the new leader - try and sync
2013-10-29T16:25:42.953Z        Running the leader process for shard shard1
2013-10-29T16:25:42.953Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:42.953Z        Checking if I should try and be the leader.
2013-10-29T16:25:42.897Z        [myappstaging-alpha4-adam_v8_shard1_replica1] 
webapp=/solr path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v8_shard1_repl...
2013-10-29T16:25:42.896Z        makePath: 
/collections/myappstaging-alpha4-adam_v8/leaders/shard1
2013-10-29T16:25:42.882Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v8_shard1_replica2/ shard1
2013-10-29T16:25:42.881Z        
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v8_shard1_replica2/: sync 
completed with http://10.170.2.54:8983/solr/myappstaging-alpha4-adam_...
2013-10-29T16:25:42.881Z        [myappstaging-alpha4-adam_v8_shard1_replica2] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:42.881Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr DONE. sync succeeded
2013-10-29T16:25:42.880Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr Received 10 versions from 
10.136.6.24:8983/solr/myappstag...
2013-10-29T16:25:42.880Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr Our versions are newer. 
ourLowThreshold=14489007407885189...
2013-10-29T16:25:42.798Z        [myappstaging-alpha4-adam_v8_shard1_replica1] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:42.798Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica1 
url=http://10.170.2.54:8983/solr START 
replicas=[http://10.136.6.24:8983/solr/myappstaging-...
2013-10-29T16:25:42.782Z        Sync Success - now sync replicas to me
2013-10-29T16:25:42.782Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr DONE. sync succeeded
2013-10-29T16:25:42.782Z        
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v8_shard1_replica2/: try 
and ask http://10.170.2.54:8983/solr/myappstaging-alpha4-adam_v8_shard1...
2013-10-29T16:25:42.782Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr Our versions are newer. 
ourLowThreshold=14489007407885189...
2013-10-29T16:25:42.781Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr Received 10 versions from 
10.170.2.54:8983/solr/myappstag...
2013-10-29T16:25:42.765Z        PeerSync: 
core=myappstaging-alpha4-adam_v8_shard1_replica2 
url=http://10.136.6.24:8983/solr START 
replicas=[http://10.170.2.54:8983/solr/myappstaging-...
2013-10-29T16:25:42.754Z        Checking if I should try and be the leader.
2013-10-29T16:25:42.754Z        I may be the new leader - try and sync
2013-10-29T16:25:42.754Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-alpha4-adam_v8_shard1_replica2/
2013-10-29T16:25:42.754Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:42.754Z        Stopping recovery for 
zkNodeName=core_node2core=myappstaging-alpha4-adam_v8_shard1_replica2
2013-10-29T16:25:42.749Z        Running the leader process for shard shard1
2013-10-29T16:25:42.693Z        makePath: 
/collections/myappstaging-preetalpha5_v9/leaders/shard1
2013-10-29T16:25:42.693Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-preetalpha5_v9_shard1_replica2/ shard1
2013-10-29T16:25:42.692Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica1 
url=http://10.170.2.54:8983/solr DONE. sync succeeded
2013-10-29T16:25:42.692Z        
http://10.136.6.24:8983/solr/myappstaging-preetalpha5_v9_shard1_replica2/: sync 
completed with http://10.170.2.54:8983/solr/myappstaging-preetalpha5_...
2013-10-29T16:25:42.692Z        [myappstaging-preetalpha5_v9_shard1_replica1] 
webapp=/solr path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-preetalpha5_v9_shard1_repl...
2013-10-29T16:25:42.618Z        [myappstaging-preetalpha5_v9_shard1_replica2] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:42.603Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica1 
url=http://10.170.2.54:8983/solr Received 10 versions from 
10.136.6.24:8983/solr/myappstag...
2013-10-29T16:25:42.603Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica1 
url=http://10.170.2.54:8983/solr Our versions are newer. 
ourLowThreshold=14499085375829442...
2013-10-29T16:25:42.596Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica1 
url=http://10.170.2.54:8983/solr START 
replicas=[http://10.136.6.24:8983/solr/myappstaging-...
2013-10-29T16:25:42.579Z        [myappstaging-preetalpha5_v9_shard1_replica1] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=...
2013-10-29T16:25:42.565Z        
http://10.136.6.24:8983/solr/myappstaging-preetalpha5_v9_shard1_replica2/: try 
and ask http://10.170.2.54:8983/solr/myappstaging-preetalpha5_v9_shard1...
2013-10-29T16:25:42.565Z        Sync Success - now sync replicas to me
2013-10-29T16:25:42.565Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr DONE. sync succeeded
2013-10-29T16:25:42.553Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr Our versions are newer. 
ourLowThreshold=14499085375829442...
2013-10-29T16:25:42.553Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr Received 10 versions from 
10.170.2.54:8983/solr/myappstag...
2013-10-29T16:25:42.549Z        PeerSync: 
core=myappstaging-preetalpha5_v9_shard1_replica2 
url=http://10.136.6.24:8983/solr START 
replicas=[http://10.170.2.54:8983/solr/myappstaging-...
2013-10-29T16:25:42.549Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-preetalpha5_v9_shard1_replica2/
2013-10-29T16:25:42.549Z        I may be the new leader - try and sync
2013-10-29T16:25:42.548Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:42.547Z        Running the leader process for shard shard1
2013-10-29T16:25:42.547Z        Checking if I should try and be the leader.
2013-10-29T16:25:42.505Z        [myappstaging-alpha4_v8_shard1_replica2] 
webapp=/solr path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-alpha4_v8_shard1_replica1/&;...
2013-10-29T16:25:42.502Z        makePath: 
/collections/myappstaging-alpha4_v8/leaders/shard1
2013-10-29T16:25:42.489Z        [myappstaging-alpha4_v8_shard1_replica1] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=2} st...
2013-10-29T16:25:42.489Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-alpha4_v8_shard1_replica1/ shard1
2013-10-29T16:25:42.489Z        
http://10.136.6.24:8983/solr/myappstaging-alpha4_v8_shard1_replica1/: sync 
completed with http://10.170.2.54:8983/solr/myappstaging-alpha4_v8_shard1_...
2013-10-29T16:25:42.488Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica2 url=http://10.170.2.54:8983/solr 
DONE. sync succeeded
2013-10-29T16:25:42.488Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica2 url=http://10.170.2.54:8983/solr 
Our versions are newer. ourLowThreshold=1449121459772325888 ot...
2013-10-29T16:25:42.488Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica2 url=http://10.170.2.54:8983/solr 
Received 1 versions from 10.136.6.24:8983/solr/myappstaging-al...
2013-10-29T16:25:42.411Z        
http://10.136.6.24:8983/solr/myappstaging-alpha4_v8_shard1_replica1/: try and 
ask http://10.170.2.54:8983/solr/myappstaging-alpha4_v8_shard1_replica2/...
2013-10-29T16:25:42.411Z        Sync Success - now sync replicas to me
2013-10-29T16:25:42.410Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica2 url=http://10.170.2.54:8983/solr 
START replicas=[http://10.136.6.24:8983/solr/myappstaging-alpha...
2013-10-29T16:25:42.410Z        [myappstaging-alpha4_v8_shard1_replica2] 
webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&version=2} st...
2013-10-29T16:25:42.394Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica1 url=http://10.136.6.24:8983/solr 
DONE. sync succeeded
2013-10-29T16:25:42.394Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica1 url=http://10.136.6.24:8983/solr 
Our versions are newer. ourLowThreshold=1449121459772325888 ot...
2013-10-29T16:25:42.394Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica1 url=http://10.136.6.24:8983/solr 
Received 1 versions from 10.170.2.54:8983/solr/myappstaging-al...
2013-10-29T16:25:42.388Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
2013-10-29T16:25:42.388Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
2013-10-29T16:25:42.387Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:252)
2013-10-29T16:25:42.387Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:65)
2013-10-29T16:25:42.387Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:249)
2013-10-29T16:25:42.387Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkStateReader.updateAliases(ZkStateReader.java:556)
2013-10-29T16:25:42.387Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:249)
2013-10-29T16:25:42.383Z        <13>Oct 29 16:25:49 solr-p1 solr: 
[qtp739893596-11195] ERROR org.apache.solr.servlet.SolrDispatchFilter - 
null:org.apache.zookeeper.KeeperExcept...
2013-10-29T16:25:42.371Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
2013-10-29T16:25:42.371Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
2013-10-29T16:25:42.371Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkStateReader.updateAliases(ZkStateReader.java:556)
2013-10-29T16:25:42.370Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:252)
2013-10-29T16:25:42.370Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:249)
2013-10-29T16:25:42.370Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:65)
2013-10-29T16:25:42.370Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:249)
2013-10-29T16:25:42.369Z        <13>Oct 29 16:25:49 solr-p1 solr: 
[qtp739893596-11186] ERROR org.apache.solr.servlet.SolrDispatchFilter - 
null:org.apache.zookeeper.KeeperExcept...
2013-10-29T16:25:42.362Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:65)
2013-10-29T16:25:42.362Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
2013-10-29T16:25:42.362Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
2013-10-29T16:25:42.362Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkStateReader.updateAliases(ZkStateReader.java:556)
2013-10-29T16:25:42.362Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:249)
2013-10-29T16:25:42.361Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:249)
2013-10-29T16:25:42.361Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:252)
2013-10-29T16:25:42.360Z        <13>Oct 29 16:25:49 solr-p1 solr: 
[qtp739893596-11194] ERROR org.apache.solr.servlet.SolrDispatchFilter - 
null:org.apache.zookeeper.KeeperExcept...
2013-10-29T16:25:42.352Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:249)
2013-10-29T16:25:42.352Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:65)
2013-10-29T16:25:42.352Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
2013-10-29T16:25:42.352Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
2013-10-29T16:25:42.352Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:249)
2013-10-29T16:25:42.352Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkStateReader.updateAliases(ZkStateReader.java:556)
2013-10-29T16:25:42.351Z        <13>Oct 29 16:25:49 solr-p1 solr: 
[qtp739893596-11196] ERROR org.apache.solr.servlet.SolrDispatchFilter - 
null:org.apache.zookeeper.KeeperExcept...
2013-10-29T16:25:42.351Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:252)
2013-10-29T16:25:42.347Z        According to ZK I 
(id=162489378735849528-10.170.2.54:8983_solr-n_0000000019) am no longer a 
leader.
2013-10-29T16:25:42.346Z        
null:org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /aliases.json
at org.apache.zookeeper.Ke...
2013-10-29T16:25:42.339Z        
null:org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /aliases.json
at org.apache.zookeeper.Ke...
2013-10-29T16:25:42.327Z        PeerSync: 
core=myappstaging-alpha4_v8_shard1_replica1 url=http://10.136.6.24:8983/solr 
START replicas=[http://10.170.2.54:8983/solr/myappstaging-alpha...
2013-10-29T16:25:42.326Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-alpha4_v8_shard1_replica1/
2013-10-29T16:25:42.324Z        I may be the new leader - try and sync
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: 
[qtp739893596-11192] ERROR org.apache.solr.servlet.SolrDispatchFilter - 
null:org.apache.zookeeper.KeeperExcept...
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:249)
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:249)
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:252)
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkStateReader.updateAliases(ZkStateReader.java:556)
2013-10-29T16:25:42.320Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:65)
2013-10-29T16:25:42.316Z        Checking if I should try and be the leader.
2013-10-29T16:25:42.316Z        
null:org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /aliases.json
at org.apache.zookeeper.Ke...
2013-10-29T16:25:42.316Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:42.310Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkStateReader.updateAliases(ZkStateReader.java:556)
2013-10-29T16:25:42.310Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:322)
2013-10-29T16:25:42.310Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
2013-10-29T16:25:42.309Z        
null:org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /aliases.json
at org.apache.zookeeper.Ke...
2013-10-29T16:25:42.309Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:249)
2013-10-29T16:25:42.309Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:65)
2013-10-29T16:25:42.307Z        Running the leader process for shard shard1
2013-10-29T16:25:42.306Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:249)
2013-10-29T16:25:42.306Z        <13>Oct 29 16:25:49 solr-p1 solr: #011at 
org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:252)
2013-10-29T16:25:42.300Z        Overseer cannot talk to ZK
2013-10-29T16:25:42.300Z        
null:org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /aliases.json
at org.apache.zookeeper.Ke...
2013-10-29T16:25:42.299Z        <13>Oct 29 16:25:49 solr-p1 solr: 
[qtp739893596-11191] ERROR org.apache.solr.servlet.SolrDispatchFilter - 
null:org.apache.zookeeper.KeeperExcept...
2013-10-29T16:25:42.299Z        
null:org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired for /aliases.json
at org.apache.zookeeper.Ke...
2013-10-29T16:25:42.298Z        
2013-10-29T16:25:42.268Z        makePath: 
/collections/myappstaging-feature-rulecompletion_v9/leaders/shard1
2013-10-29T16:25:42.263Z        I am the new leader: 
http://10.136.6.24:8983/solr/myappstaging-feature-rulecompletion_v9_shard1_replica1/
 shard1
2013-10-29T16:25:42.259Z        
[myappstaging-feature-rulecompletion_v9_shard1_replica2] webapp=/solr path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-feature-rulecom...
2013-10-29T16:25:42.259Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica2 
url=http://10.170.2.54:8983/solr DONE. sync succeeded
2013-10-29T16:25:42.251Z        
[myappstaging-feature-rulecompletion_v9_shard1_replica1] webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&a...
2013-10-29T16:25:42.251Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica2 
url=http://10.170.2.54:8983/solr Our versions are newer. 
ourLowThreshold=144962...
2013-10-29T16:25:42.251Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica2 
url=http://10.170.2.54:8983/solr Received 4 versions from 
10.136.6.24:8983/solr...
2013-10-29T16:25:42.251Z        
http://10.136.6.24:8983/solr/myappstaging-feature-rulecompletion_v9_shard1_replica1/:
 sync completed with http://10.170.2.54:8983/solr/myappstaging-f...
2013-10-29T16:25:42.247Z        
http://10.136.6.24:8983/solr/myappstaging-feature-rulecompletion_v9_shard1_replica1/:
 try and ask http://10.170.2.54:8983/solr/myappstaging-feature-ru...
2013-10-29T16:25:42.246Z        Sync Success - now sync replicas to me
2013-10-29T16:25:42.246Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica1 
url=http://10.136.6.24:8983/solr DONE. sync succeeded
2013-10-29T16:25:42.239Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica2 
url=http://10.170.2.54:8983/solr START 
replicas=[http://10.136.6.24:8983/solr/hi...
2013-10-29T16:25:42.236Z        
[myappstaging-feature-rulecompletion_v9_shard1_replica2] webapp=/solr path=/get 
params={getVersions=100&distrib=false&wt=javabin&qt=/get&a...
2013-10-29T16:25:42.236Z        Connection with ZooKeeper reestablished.
2013-10-29T16:25:42.236Z        publishing 
core=myappstaging-alpha3_v7_shard1_replica2 state=down
2013-10-29T16:25:42.232Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica1 
url=http://10.136.6.24:8983/solr Our versions are newer. 
ourLowThreshold=144962...
2013-10-29T16:25:42.232Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica1 
url=http://10.136.6.24:8983/solr Received 4 versions from 
10.170.2.54:8983/solr...
2013-10-29T16:25:42.231Z        PeerSync: 
core=myappstaging-feature-rulecompletion_v9_shard1_replica1 
url=http://10.136.6.24:8983/solr START 
replicas=[http://10.170.2.54:8983/solr/hi...
2013-10-29T16:25:42.230Z        Client is connected to ZooKeeper
2013-10-29T16:25:42.230Z        Sync replicas to 
http://10.136.6.24:8983/solr/myappstaging-feature-rulecompletion_v9_shard1_replica1/
2013-10-29T16:25:42.230Z        I may be the new leader - try and sync
2013-10-29T16:25:42.230Z        My last published State was Active, it's okay 
to be the leader.
2013-10-29T16:25:42.229Z        Watcher 
org.apache.solr.common.cloud.ConnectionManager@52e80740 
name:ZooKeeperConnection 
Watcher:solr-z1.domain.com:2181,solr-z2.domain.com:2181,sol...
2013-10-29T16:25:42.223Z        Checking if I should try and be the leader.
2013-10-29T16:25:42.222Z        Waiting for client to connect to ZooKeeper
2013-10-29T16:25:42.211Z        Running the leader process for shard shard1
2013-10-29T16:25:42.186Z        Connection expired - starting a new one...
2013-10-29T16:25:42.186Z        Our previous ZooKeeper session was expired. 
Attempting to reconnect to recover relationship with ZooKeeper...
2013-10-29T16:25:42.179Z        Watcher fired on path: null state: Expired type 
None
2013-10-29T16:25:42.179Z        Watcher fired on path: null state: Expired type 
None
2013-10-29T16:25:42.179Z        Watcher fired on path: null state: Expired type 
None
2013-10-29T16:25:42.179Z        Watcher fired on path: null state: Expired type 
None
2013-10-29T16:25:42.179Z        Watcher 
org.apache.solr.common.cloud.ConnectionManager@52e80740 
name:ZooKeeperConnection 
Watcher:solr-z1.domain.com:2181,solr-z2.domain.com:2181,sol...
2013-10-29T16:25:42.169Z        
[myappstaging-feature-rulecompletion2_v9_shard1_replica2] webapp=/solr 
path=/get 
params={sync=http://10.136.6.24:8983/solr/myappstaging-feature-ruleco...
2013-10-29T16:25:42.169Z        PeerSync: 
core=myappstaging-feature-rulecompletion2_v9_shard1_replica2 
url=http://10.170.2.54:8983/solr DONE. sync succeeded

> Strange error condition with cloud replication not working quite right
> ----------------------------------------------------------------------
>
>                 Key: SOLR-5407
>                 URL: https://issues.apache.org/jira/browse/SOLR-5407
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.5
>            Reporter: Nathan Neulinger
>              Labels: cloud, replication
>
> I have a clodu deployment of 4.5 on EC2. Architecture is 3 dedicated ZK 
> nodes, and a pair of solr nodes.  I'll apologize in advance that this error 
> report is not going to have a lot of detail, I'm really hoping that the 
> scenario/description will trigger some "likely" possible explanation.
> The situation I got into was that the server had decided to fail over, so my 
> app servers were all taking to what should have been the primary for most of 
> the shards/collections, but actually was the replica.
> Here's where it gets odd - no errors being returned to the client code for 
> any of the searches or document updates - and the current primary server was 
> definitely receiving all of the updates - even though they were being 
> submitted to the inactive/replica node. (clients talking to solr-p1, which 
> was not primary at the time, and writes were being passed through to solr-r1, 
> which was primary at the time.)
> All sounds good so far right? Except - the replica server at the time, 
> through which the writes were passing - never got any of those content 
> updates. It had an old unmodified copy of the index. 
> I restarted solr-p1 (was the replica at the time) - no change in behavior. 
> Behavior did not change until I killed and restarted the current primary 
> (solr-r1) to force it to fail over.
> At that point, everything was all happy again and working properly. 
> Until this morning, when one of the developers provisioned a new collection, 
> which happened to put it's primary on solr-r1. Again, clients all pointing at 
> solr-p1. The developer reported that the documents were going into the index, 
> but not visible on the replica server. 



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