Hi list,

I'm using Resin Pro 3.0.23 (2 servers, load balanced/distributed
sessions) and I've seen this error a few times in the log file:

[2008-01-10 11:31:01.379] java.io.EOFException
[2008-01-10 11:31:01.379]       at
java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.ja
va:2279)
[2008-01-10 11:31:01.379]       at
java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStre
am.java:2748)
[2008-01-10 11:31:01.379]       at
java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:780)
[2008-01-10 11:31:01.379]       at
java.io.ObjectInputStream.<init>(ObjectInputStream.java:280)
[2008-01-10 11:31:01.379]       at
com.caucho.server.cluster.ClusterObject$DistributedObjectInputStream.<in
it>(ClusterObject.java:474)
[2008-01-10 11:31:01.379]       at
com.caucho.server.cluster.ClusterObject.load(ClusterObject.java:286)
[2008-01-10 11:31:01.379]       at
com.caucho.server.cluster.FileBacking.loadSelf(FileBacking.java:318)
[2008-01-10 11:31:01.379]       at
com.caucho.server.cluster.ClusterStore.load(ClusterStore.java:423)
[2008-01-10 11:31:01.379]       at
com.caucho.server.cluster.ClusterObject.load(ClusterObject.java:259)
[2008-01-10 11:31:01.379]       at
com.caucho.server.session.SessionImpl.load(SessionImpl.java:702)
[2008-01-10 11:31:01.379]       at
com.caucho.server.session.SessionManager.getSession(SessionManager.java:
1278)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.AbstractHttpRequest.createSession(AbstractH
ttpRequest.java:1444)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.AbstractHttpRequest.getSession(AbstractHttp
Request.java:1256)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.AbstractHttpResponse.writeHeaders(AbstractH
ttpResponse.java:1556)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.ResponseStream.writeHeaders(ResponseStream.
java:216)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.ResponseStream.writeNext(ResponseStream.jav
a:401)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.ToByteResponseStream.flushByteBuffer(ToByte
ResponseStream.java:518)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.ToByteResponseStream.flushBuffer(ToByteResp
onseStream.java:424)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.ResponseStream.finish(ResponseStream.java:6
64)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.ResponseStream.close(ResponseStream.java:79
6)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.AbstractHttpResponse.finish(AbstractHttpRes
ponse.java:1956)
[2008-01-10 11:31:01.379]       at
com.caucho.server.connection.AbstractHttpResponse.close(AbstractHttpResp
onse.java:260)
[2008-01-10 11:31:01.379]       at
com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.ja
va:190)
[2008-01-10 11:31:01.379]       at
com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.j
ava:229)
[2008-01-10 11:31:01.379]       at
com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:274)
[2008-01-10 11:31:01.379]       at
com.caucho.server.port.TcpConnection.run(TcpConnection.java:511)
[2008-01-10 11:31:01.379]       at
com.caucho.util.ThreadPool.runTasks(ThreadPool.java:520)
[2008-01-10 11:31:01.379]       at
com.caucho.util.ThreadPool.run(ThreadPool.java:442)
[2008-01-10 11:31:01.379]       at java.lang.Thread.run(Thread.java:619)

The servers are configured to persist sessions across the cluster. On
both servers the size of the DB file is 500M. It doesn't grow or shrink.
Is this normal? I'm concerned as to what's causing the above error. The
(hardware) load balancer has been reporting that it has reached it's
maximum number of sessions. Could this be playing a part?

Any assistance would be appreciated.

rgds,

Richard



Richard Grantham
Development

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