We recently upgraded to Tomcat 6.0.16 and Apache 2.2.8. We started receiving intermittent exceptions that we hadn't seen under Tomcat 5.0 and Apache 2.0. They usually occur when we are receiving moderate to heavy traffic, but we have never seen two thrown the same day closer than 15 minutes apart. I wish I could say they always occur when we are experiencing our heaviest loads, but this is not the case. I've checked the access logs and compared them to the error logs. The times don't match. The message I receive is "Exception while dispatching incoming RPC call java.io.IOException: Socket read failed." I found one thread which mentions "socket read failed" in context with Tomcat native code and AJAX, http://www.velocityreviews.com/forums/t524769-tomcat-exception-thrown... <http://www.velocityreviews.com/forums/t524769-tomcat-exception-thrown-whilst -processing-posted-parameters.html>. I don't know if they were using GWT, but we are.
There are two possible solutions to the problem in that thread. One is to remove the Tomcat native code, the other is to upgrade to Tomcat 6.0.13. The thread also mentions a bug report, http://issues.apache.org/bugzilla/show_bug.cgi?id=40960. The bug appears to be associated with request timeouts. Our exception does not appear to be a timeout issue. We are currently using: GWT version 1.4.62 Tomcat 6.0.16 Apache 2.2.8 tcnative-1.dll binary version 1.1.12 All of the above are running on Windows Server 2003. I would like to keep the Tomcat native code if at all possible since it is supposedly more efficient. I can't "upgrade" to 6.0.13 since I'm already at 6.0.16, and I would hate to downgrade if I don't need to. Has anyone run into this problem? Does anyone know what would cause this exception to be thrown? Here is a copy of the stack trace I'm seeing in the logs: 2008-07-07 16:57:23,212 ERROR org.apache.catalina.core.ContainerBase. [Catalina].[localhost].[/etime] - Exception while dispatching incoming RPC call java.io.IOException: Socket read failed at org.apache.coyote.ajp.AjpAprProcessor.read(AjpAprProcessor.java: 1019) at org.apache.coyote.ajp.AjpAprProcessor.readMessage(AjpAprProcessor.java: 1141) at org.apache.coyote.ajp.AjpAprProcessor.receive(AjpAprProcessor.java: 1073) at org.apache.coyote.ajp.AjpAprProcessor $SocketInputBuffer.doRead(AjpAprProcessor.java:1211) at org.apache.coyote.Request.doRead(Request.java:428) at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java: 298) at org.apache.tomcat.util.buf.ByteChunk.substract(ByteChunk.java:405) at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java: 313) at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java: 193) at com.google.gwt.user.server.rpc.RemoteServiceServlet.readPayloadAsUtf8(RemoteS erviceServlet.java: 129) at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServl et.java: 178) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationF ilterChain.java: 290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCha in.java: 206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.jav a: 233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.jav a: 175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java: 128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 286) at org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java: 419) at org.apache.coyote.ajp.AjpAprProtocol $AjpConnectionHandler.process(AjpAprProtocol.java:378) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java: 1509) at java.lang.Thread.run(Unknown Source) - bradclif --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
