[YARN-7593] SessionMovedException in ZKRMStateStore and can't auto recover

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.9.0
• Component/s: resourcemanager
• Assignee: Unassigned
• Reporter: Tao Yang
• Created: 01/Dec/17 10:56
• Updated: 01/Dec/17 10:59

Description

RM may throw SessionMovedException and can't recover ZKRMStateStore after zk connection timeout.
In our case, after connection with zk-server-5 timeout, zk client in ZKRMStateStore reconnected with zk-server-1 and timeout again, then reconnected to zk-server-4. After zk cluster backed to normal, zk client in ZKRMStateStore still can't recover and continued to throw SessionMovedException with fixed interval(about half a hour). The logs of zk servers show that it still try to connect with zk-server-5(outdated connection) but not zk-server-4(latest connection).
Exception stack:

ERROR [AsyncDispatcher event handler] org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: Error storing app: application_1498833634675_173952
org.apache.zookeeper.KeeperException$SessionMovedException: KeeperErrorCode = Session moved
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:131)
        at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:949)
        at org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:915)
        at org.apache.curator.framework.imps.CuratorTransactionImpl.doOperation(CuratorTransactionImpl.java:159)
        at org.apache.curator.framework.imps.CuratorTransactionImpl.access$200(CuratorTransactionImpl.java:44)
        at org.apache.curator.framework.imps.CuratorTransactionImpl$2.call(CuratorTransactionImpl.java:129)
        at org.apache.curator.framework.imps.CuratorTransactionImpl$2.call(CuratorTransactionImpl.java:125)
        at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:107)
        at org.apache.curator.framework.imps.CuratorTransactionImpl.commit(CuratorTransactionImpl.java:122)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore$SafeTransaction.commit(ZKRMStateStore.java:943)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.safeCreate(ZKRMStateStore.java:903)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore.storeApplicationStateInternal(ZKRMStateStore.java:563)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$StoreAppTransition.transition(RMStateStore.java:213)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$StoreAppTransition.transition(RMStateStore.java:195)
        at org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:385)
        at org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302)
        at org.apache.hadoop.yarn.state.StateMachineFactory.access$300(StateMachineFactory.java:46)
        at org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:448)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore.handleStoreEvent(RMStateStore.java:1033)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:1114)
        at org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ForwardingEventHandler.handle(RMStateStore.java:1109)
        at org.apache.hadoop.yarn.event.AsyncDispatcher.dispatch(AsyncDispatcher.java:184)
        at org.apache.hadoop.yarn.event.AsyncDispatcher$1.run(AsyncDispatcher.java:110)
        at java.lang.Thread.run(Thread.java:834)

RM logs:

2017-11-25 15:26:27,680 INFO [main-SendThread(zk-server-5:2181)] org.apache.zookeeper.ClientCnxn: Client session timed out, have not heard from server in 8004ms for sessionid 0x55cf8f81ebd7f1a, closing socket connection and attempting reconnect
2017-11-25 15:26:27,781 INFO [main-EventThread] org.apache.curator.framework.state.ConnectionStateManager: State change: SUSPENDED
2017-11-25 15:26:27,968 INFO [main-SendThread(zk-server-1:2181)] org.apache.zookeeper.ClientCnxn: Opening socket connection to server zk-server-1:2181. Will not attempt to authenticate using SASL (unknown error)
2017-11-25 15:26:27,968 INFO [main-SendThread(zk-server-1:2181)] org.apache.zookeeper.ClientCnxn: Socket connection established to zk-server-1:2181, initiating session
2017-11-25 15:26:28,683 INFO [Socket Reader #1 for port 8030] SecurityLogger.org.apache.hadoop.ipc.Server: Auth successful for appattempt_1498833634675_173646_000001 (auth:SIMPLE)
2017-11-25 15:26:29,060 INFO [Socket Reader #1 for port 8030] SecurityLogger.org.apache.hadoop.ipc.Server: Auth successful for appattempt_1498833634675_173701_000001 (auth:SIMPLE)
2017-11-25 15:26:30,370 INFO [main-SendThread(zk-server-1:2181)] org.apache.zookeeper.ClientCnxn: Client session timed out, have not heard from server in 2402ms for sessionid 0x55cf8f81ebd7f1a, closing socket connection and attempting reconnect
2017-11-25 15:26:30,541 INFO [main-SendThread(zk-server-4:2181)] org.apache.zookeeper.ClientCnxn: Opening socket connection to server zk-server-4:2181. Will not attempt to authenticate using SASL (unknown error)
2017-11-25 15:26:30,541 INFO [main-SendThread(zk-server-4:2181)] org.apache.zookeeper.ClientCnxn: Socket connection established to zk-server-4:2181, initiating session
2017-11-25 15:26:30,812 INFO [main-SendThread(zk-server-4:2181)] org.apache.zookeeper.ClientCnxn: Session establishment complete on server zk-server-4:2181, sessionid = 0x55cf8f81ebd7f1a, negotiated timeout = 12000
2017-11-25 15:26:30,812 INFO [main-EventThread] org.apache.curator.framework.state.ConnectionStateManager: State change: RECONNECTED

Error logs in zk-server-5:

2017-11-25 15:26:30,825 [myid:5] - INFO  [ProcessThread(sid:5 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x55cf8f81ebd7f1a type:ping cxid:0xfffffffffffffffe zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error Path:null Error:KeeperErrorCode = Session moved
2017-11-25 15:26:30,831 [myid:5] - WARN  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@357] - caught end of stream exception
EndOfStreamException: Unable to read additional data from client sessionid 0x55cf8f81ebd7f1a, likely client has closed socket
        at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228)
        at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
        at java.lang.Thread.run(Thread.java:834)
2017-11-25 15:26:30,831 [myid:5] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007] - Closed socket connection for client /xxx:22014 which had sessionid 0x55cf8f81ebd7f1a
2017-11-25 15:26:31,472 [myid:5] - INFO  [ProcessThread(sid:5 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x55cf8f81ebd7f1a type:sync: cxid:0x1ca4e zxid:0xfffffffffffffffe txntype:unknown reqpath:/ Error Path:null Error:KeeperErrorCode = Session moved
2017-11-25 15:26:31,472 [myid:5] - INFO  [ProcessThread(sid:5 cport:-1)::PrepRequestProcessor@645] - Got user-level KeeperException when processing sessionid:0x55cf8f81ebd7f1a ty
pe:sync: cxid:0x1ca4e zxid:0xfffffffffffffffe txntype:unknown reqpath:/ Error Path:null Error:KeeperErrorCode = Session moved
2017-11-25 15:30:07,883 [myid:5] - INFO  [ProcessThread(sid:5 cport:-1)::PrepRequestProcessor@592] - Got user-level KeeperException when processing sessionid:0x55cf8f81ebd7f1a type:multi cxid:0x1ca50 zxid:0x1195f7975 txntype:-1 reqpath:n/a aborting remaining multi ops. Error Path:null Error:KeeperErrorCode = Session moved
2017-11-25 15:30:08,886 [myid:5] - INFO  [ProcessThread(sid:5 cport:-1)::PrepRequestProcessor@592] - Got user-level KeeperException when processing sessionid:0x55cf8f81ebd7f1a type:multi cxid:0x1ca51 zxid:0x1195f79a5 txntype:-1 reqpath:n/a aborting remaining multi ops. Error Path:null Error:KeeperErrorCode = Session moved
2017-11-25 15:30:09,888 [myid:5] - INFO  [ProcessThread(sid:5 cport:-1)::PrepRequestProcessor@592] - Got user-level KeeperException when processing sessionid:0x55cf8f81ebd7f1a type:multi cxid:0x1ca52 zxid:0x1195f79cf txntype:-1 reqpath:n/a aborting remaining multi ops. Error Path:null Error:KeeperErrorCode = Session moved
...