[infinispan-issues] [JBoss JIRA] (ISPN-1317) Concurrent state transfer requests can lead to premature flush wait closures

Concurrent state transfer requests can lead to premature flush wait closures ---------------------------------------------------------------------------- Key: ISPN-1317 URL: https://issues.jboss.org/browse/ISPN-1317 Project: Infinispan Issue Type: Bug Components: State transfer Affects Versions: 5.0.0.FINAL Reporter: Galder Zamarreño Assignee: Galder Zamarreño Priority: Critical Attachments: 1317-analysis.txt Logs in JBPAPP-6929 show: {code}15:40:22,698 ERROR [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (STREAMING_STATE_TRANSFER-sender-1,default,michal-linhard-12702) ISPN000095: Caught while responding to state transfer request: org.infinispan.statetransfer.StateTransferException: java.util.concurrent.TimeoutException: Timed out waiting for a cluster-wide sync to be acquired. (timeout = 60 seconds) at org.infinispan.statetransfer.StateTransferManagerImpl.generateState(StateTransferManagerImpl.java:162) [infinispan-core-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT] at org.infinispan.remoting.InboundInvocationHandlerImpl.generateState(InboundInvocationHandlerImpl.java:248) [infinispan-core-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT] at org.infinispan.remoting.transport.jgroups.JGroupsTransport.getState(JGroupsTransport.java:590) [infinispan-core-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT] at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.handleUpEvent(MessageDispatcher.java:690) [jgroups-2.12.1.Final.jar:] at org.jgroups.blocks.MessageDispatcher$ProtocolAdapter.up(MessageDispatcher.java:771) [jgroups-2.12.1.Final.jar:] at org.jgroups.JChannel.up(JChannel.java:1484) [jgroups-2.12.1.Final.jar:] at org.jgroups.stack.ProtocolStack.up(ProtocolStack.java:1074) [jgroups-2.12.1.Final.jar:] at org.jgroups.protocols.pbcast.FLUSH.up(FLUSH.java:477) [jgroups-2.12.1.Final.jar:] at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER$StateProviderHandler.process(STREAMING_STATE_TRANSFER.java:651) [jgroups-2.12.1.Final.jar:] at org.jgroups.protocols.pbcast.STREAMING_STATE_TRANSFER$StateProviderThreadSpawner$1.run(STREAMING_STATE_TRANSFER.java:580) [jgroups-2.12.1.Final.jar:] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_25] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_25] at java.lang.Thread.run(Thread.java:662) [:1.6.0_25] Caused by: java.util.concurrent.TimeoutException: Timed out waiting for a cluster-wide sync to be acquired. (timeout = 60 seconds) at org.infinispan.remoting.transport.jgroups.JGroupsDistSync.blockUntilAcquired(JGroupsDistSync.java:62) [infinispan-core-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT] at org.infinispan.statetransfer.StateTransferManagerImpl.generateTransactionLog(StateTransferManagerImpl.java:196) [infinispan-core-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT] at org.infinispan.statetransfer.StateTransferManagerImpl.generateState(StateTransferManagerImpl.java:152) [infinispan-core-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT] ... 12 more{code} Now, what's odd about this is that the JGroupsDistSync.flushWaitGate behind it is only acquired/released while state transfer control command is sent and the logs show that both the enabling(acquiring) and disabling(releasing) state transfer control commands where built: {code}15:39:20,902 TRACE [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-4) dests=[michal-linhard-37465], command=StateTransferControlCommand{enabled=true}, mode=SYNCHRONOUS, timeout=480000 ... 15:39:21,074 TRACE [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-4) dests=[michal-linhard-37465], command=StateTransferControlCommand{enabled=false}, mode=SYNCHRONOUS, timeout=480000{code} There's no other references to StateTransferControlCommand, so how can it be that flushWaitGate is open?