Pb : Tangosol cluster member has lost its storage/Questions about warnings

Hello
We have the following configuration :
-JVM : JRockit 1.4.2_8
-App Server : Weblogic 8.1
We have a cluster with 4 members in 2 physical machines :
- Weblogic server 1 and tangosol server 1 on machine 1
- Weblogic server 2 and tangosol server 2 on machine 2
The cache mode is Distributed.
The 2 Weblogic servers have no local storage defined (localstorage=false).
The 2 Weblogic servers have local storage defined (localstorage=true).
We are performing some tests in this environment and we display continuously the
cluster members information.
Today, the Distributed cache on Tangosol server 2 left the cluster at 16:19 and
data seem to be transferred to the Tangosol server 1.
The main problem is that the Tangosol server 2 is always running but has no longer storage enabled (information we display).
This information is also available in the server logs :
2007-05-15 16:19:02.076 Tangosol Coherence AE 3.2/367 <D5> (thread=DistributedCache, member=n/a): Service DistributedCache left the cluster
Is there an explanation for this behavior? Here are more logs :
2007-05-15 16:18:52.092 Tangosol Coherence AE 3.2/367 <Error> (thread=Cluster, member=1): This senior Member(Id=1, Timestamp=2007-05-14 17:07:06.956, Address=...:..., MachineId=38679) appears to have been disconnected from other nodes due to a long period of inactivity and the seniority has been assumed by the Member(Id=2, Timestamp=2007-05-14 17:07:19.439, Address=...:..., MachineId=38678); stopping cluster service.
2007-05-15 16:18:53.389 Tangosol Coherence AE 3.2/367 <D6> (thread=PacketPublisher, member=1): Member(Id=2, Timestamp=2007-05-14 17:07:19.439, Address=...:..., MachineId=38678) has failed to respond to 17 packets; declaring this member as paused.
2007-05-15 16:18:56.185 Tangosol Coherence AE 3.2/367 <Info> (thread=Main Thread, member=n/a): Restarting cluster
2007-05-15 16:18:57.404 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Service Cluster left the cluster
2007-05-15 16:19:00.966 Tangosol Coherence AE 3.2/367 <D5> (thread=Invocation:InvocationService, member=n/a): Service InvocationService left the cluster
2007-05-15 16:19:01.263 Tangosol Coherence AE 3.2/367 <D5> (thread=OptimisticCache, member=n/a): Service OptimisticCache left the cluster
2007-05-15 16:19:01.263 Tangosol Coherence AE 3.2/367 <D5> (thread=ReplicatedCache, member=n/a): Service ReplicatedCache left the cluster
2007-05-15 16:19:02.076 Tangosol Coherence AE 3.2/367 <D5> (thread=DistributedCache, member=n/a): Service DistributedCache left the cluster
2007-05-15 16:19:15.122 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
2007-05-15 16:19:15.621 Tangosol Coherence AE 3.2/367 <Info> (thread=Cluster, member=n/a): This Member(Id=3, Timestamp=2007-05-15 16:19:16.947, Address=...:8096, MachineId=38679, Edition=Application Edition, Mode=Production, CpuCount=2, SocketCount=2) joined cluster with senior Member(Id=2, Timestamp=2007-05-14 17:07:19.439, Address=...:..., MachineId=38678, Edition=Application Edition, Mode=Production, CpuCount=2, SocketCount=2)
2007-05-15 16:19:15.700 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -1, received: 65535
2007-05-15 16:19:15.715 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:19:15.809 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member(Id=5, Timestamp=2007-05-14 18:44:59.606, Address=...:..., MachineId=38678) joined Cluster with senior member 2
2007-05-15 16:19:15.840 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -1, received: 65535
2007-05-15 16:19:15.918 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member(Id=6, Timestamp=2007-05-14 18:45:04.621, Address=...:..., MachineId=38679) joined Cluster with senior member 2
2007-05-15 16:19:15.965 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member 2 joined Service ReplicatedCache with senior member 2
2007-05-15 16:19:15.965 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member 2 joined Service DistributedCache with senior member 2
2007-05-15 16:19:15.965 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member 2 joined Service OptimisticCache with senior member 2
2007-05-15 16:19:15.965 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member 2 joined Service InvocationService with senior member 2
2007-05-15 16:19:15.965 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:19:15.965 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member 5 joined Service DistributedCache with senior member 2
2007-05-15 16:19:15.996 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -1, received: 65535
2007-05-15 16:19:16.887 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:19:17.918 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=n/a): Member 6 joined Service DistributedCache with senior member 2
2007-05-15 16:19:17.949 Tangosol Coherence AE 3.2/367 <Info> (thread=Main Thread, member=3): Restarting Service: ReplicatedCache
2007-05-15 16:19:18.981 Tangosol Coherence AE 3.2/367 <D5> (thread=Cluster, member=3): TcpRing: connecting to member 2 using TcpSocket{State=STATE_OPEN, Socket=Socket[addr=/...,port=...,localport=...]}
2007-05-15 16:19:18.996 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -3, received: 65533
2007-05-15 16:19:18.996 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -3, received: 65533
2007-05-15 16:19:19.934 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -3, received: 65533
2007-05-15 16:19:19.934 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -3, received: 65533
2007-05-15 16:19:20.137 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -3, received: 65533
2007-05-15 16:19:20.137 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -3, received: 65533
2007-05-15 16:19:20.762 Tangosol Coherence AE 3.2/367 <D5> (thread=ReplicatedCache, member=3): Service ReplicatedCache joined the cluster with senior service member 2
2007-05-15 16:19:20.949 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -17, received: 65519
2007-05-15 16:19:20.949 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:19:21.840 Tangosol Coherence AE 3.2/367 <Info> (thread=Main Thread, member=3): Restarting Service: DistributedCache
2007-05-15 16:19:25.465 Tangosol Coherence AE 3.2/367 <D5> (thread=DistributedCache, member=3): Service DistributedCache joined the cluster with senior service member 2
2007-05-15 16:19:25.496 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:19:25.511 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -17, received: 65519
2007-05-15 16:19:25.558 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:19:26.386 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=3): Compensated for JIT compilation error (optimized out I2S); Expected: -2, received: 65534
2007-05-15 16:20:27.820 Tangosol Coherence AE 3.2/367 <D6> (thread=PacketPublisher, member=3): Member(Id=6, Timestamp=2007-05-14 18:45:04.621, Address=...:..., MachineId=38679) has failed to respond to 17 packets; declaring this member as paused.
2007-05-15 16:20:29.382 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketPublisher, member=3): Member(Id=6, Timestamp=2007-05-14 18:45:04.621, Address=...:..., MachineId=38679) was unresponsive for 1562 ms, 24 packets have timed-out, PauseRate=0.0212, Paused=false, Deferring=false, OutstandingPackets=0, DeferredPackets=0, Threshold=1785
2007-05-15 16:20:41.881 Tangosol Coherence AE 3.2/367 <D6> (thread=PacketPublisher, member=3): Member(Id=6, Timestamp=2007-05-14 18:45:04.621, Address=...:..., MachineId=38679) has failed to respond to 17 packets; declaring this member as paused.
In addition, can someone explain the following warning messages we have in our Tangosol servers log files :
2007-05-15 16:19:15.700 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketReceiver, member=n/a): Compensated for JIT compilation error (optimized out I2S); Expected: -1, received: 65535
2007-05-15 16:20:29.382 Tangosol Coherence AE 3.2/367 <Warning> (thread=PacketPublisher, member=3): Member(Id=6, Timestamp=2007-05-14 18:45:04.621, Address=...:..., MachineId=38679) was unresponsive for 1562 ms, 24 packets have timed-out, PauseRate=0.0212, Paused=false, Deferring=false, OutstandingPackets=0, DeferredPackets=0, Threshold=1785
We are a little bit blocked because we plan to install this environment on production.
Regards.

Hi
We have 2 methods that check our cluster behavior :
* This method returns the number of nodes in the Tangosol cluster.
* @return String
* @throws Throwable if an error occurs
public String tangosolCount() throws Throwable {
 int tangosolNodesCount = 0;
 try {
 NamedCache cache = CacheFactory.getCache("cacheName");
 DistributedCacheService service = (DistributedCacheService) cache.getCacheService();
 tangosolNodesCount = service.getCluster().getMemberSet().size();
 } catch (Throwable t) {
 throw new RuntimeException("An error occurs when trying to access to Tangosol cache.", t);
return String.valueOf(tangosolNodesCount);
* This method returns the number of nodes on which storage is defined, in the Tangosol cluster.
* @return String
* @throws Throwable if an error occurs
public String tangosolStorageCount() throws Throwable {
 int tangosolStorageCount = 0;
 try {
 NamedCache cache = CacheFactory.getCache("cacheName");
 DistributedCacheService service = (DistributedCacheService) cache.getCacheService();
 tangosolStorageCount = service.getStorageEnabledMembers().size();
 } catch (Throwable t) {
 throw new RuntimeException("An error occurs when trying to access to Tangosol cache.", t);
return String.valueOf(tangosolStorageCount);
These information are always displayed in a web page.
The Tangosol log files are attached.
Since yesterday 16:19 in Paris (till now, I do not restart the node that has no longer storage), we have tangosolCount=4 and tangosolStorageCount=1.
The Tangosol servers are started (com.tangosol.net.DefaultCacheServer) with the parameter -Dtangosol.coherence.distributed.localstorage=true.
I confirm that yesterday at 16:19, there was a high GC time. Heap sizes are set to 128Mo.
Regards. Attachment: Tangosol_1.log (*To use this attachment you will need to rename 533.bin to Tangosol_1.log after the download is complete.) Attachment: Tangosol_2.log (*To use this attachment you will need to rename 534.bin to Tangosol_2.log after the download is complete.)

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