I will explain this as race conditions between 2 deployment scanners working on the same deployment unit. You will encounter undeterministic behavior in this setup.
The idea here is to make sure that only one ODE instance takes the responsibility to deploy the process artifact. Inorder to come up with an approach, you will have to understand the basic deployment process. I would suggest you to work on a single ODE instance first to understand the deployment process. Will give a head start. ODE has 2 ways of deploying processes. 1) Deployment Web Service 2) Manual deployment - (refer: https://ode.apache.org/process-versioning.html#remote-deployment-vs-hand-made-deployment ) Manual deployment is handled by a Deployment Poller thread scanning the deployment directory ( https://github.com/apache/ode/blob/master/axis2/src/main/java/org/apache/ode/axis2/deploy/DeploymentPoller.java ) Every 3 seconds, it scans for any new deployment units and kicks of the deployment process by invoking the ProcessStoreImpl. With Deployment Web Service, the Deployment poller is kept *on* *hold* until the deployment completes as it extracts the process archive onto the deployment directory. This is done to avoid the race conditions arising from the DeploymentPoller. regards, sathwik On Sun, May 10, 2015 at 10:24 PM, sudharma subasinghe <suba...@cse.mrt.ac.lk > wrote: > Hi, > > I used same deploy directory for both ODE instances and deployed a process > while debugging the source code. while deploying HelloWorld2-1 in Tomcat-1 > the version is set to 2. I got an exception due to it. Following are the > console output of each server. > > Tomcat-1 > > 21:49:42,201 WARN [ProcessStoreImpl] Database out of synch for DU > HelloWorld2-1 > 21:50:08,766 INFO [BpelServerImpl] Registered process { > http://ode/bpel/unit-test}HelloWorld2-2. > 21:50:41,617 WARN [DeploymentWebService] Invocation of operation deploy > failed > org.apache.ode.axis2.OdeFault: Error while creating file > HelloWorld2-1.deployeddeployment failed > at > > org.apache.ode.axis2.service.DeploymentWebService$DeploymentMessageReceiver.invokeBusinessLogic(DeploymentWebService.java:185) > at > > org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:114) > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181) > at > > org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172) > at > org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) > at > > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) > at > > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) > at > org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) > at > > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) > at > > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) > at > > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) > at > > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) > at > > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) > at > > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) > at > > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) > at > > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) > at > > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) > at > > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620) > at > > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) > at > > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at > > org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) > at java.lang.Thread.run(Thread.java:722) > > > Tomcat-2 > > 21:52:31,561 ERROR [ProcessStoreImpl] Process { > http://ode/bpel/unit-test}HelloWorld2-1 not found. > 21:52:31,610 WARN [DeploymentWebService] Invocation of operation deploy > failed > org.apache.ode.bpel.iapi.ContextException: DbError > at > org.apache.ode.store.ProcessStoreImpl.exec(ProcessStoreImpl.java:636) > at > org.apache.ode.store.ProcessStoreImpl.setState(ProcessStoreImpl.java:435) > at > > org.apache.ode.store.ProcessStoreImpl.setRetiredPackage(ProcessStoreImpl.java:485) > at > > org.apache.ode.store.ProcessStoreImpl.retirePreviousPackageVersions(ProcessStoreImpl.java:349) > at > org.apache.ode.store.ProcessStoreImpl.deploy(ProcessStoreImpl.java:225) > at > org.apache.ode.store.ProcessStoreImpl.deploy(ProcessStoreImpl.java:172) > at > > org.apache.ode.axis2.service.DeploymentWebService$DeploymentMessageReceiver.invokeBusinessLogic(DeploymentWebService.java:181) > at > > org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:114) > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181) > at > > org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172) > at > org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) > at > > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) > at > > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) > at > org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) > at > > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) > at > > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) > at > > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) > at > > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) > at > > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) > at > > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) > at > > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) > at > org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) > at > > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) > at > > org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) > at > > org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620) > at > > org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) > at > > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at > > org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) > at java.lang.Thread.run(Thread.java:722) > Caused by: java.util.concurrent.ExecutionException: > org.apache.ode.bpel.iapi.ContextException: Process { > http://ode/bpel/unit-test}HelloWorld2-1 not found. > at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252) > at java.util.concurrent.FutureTask.get(FutureTask.java:111) > at > org.apache.ode.store.ProcessStoreImpl.exec(ProcessStoreImpl.java:634) > ... 32 more > Caused by: org.apache.ode.bpel.iapi.ContextException: Process { > http://ode/bpel/unit-test}HelloWorld2-1 not found. > at > org.apache.ode.store.ProcessStoreImpl$4.call(ProcessStoreImpl.java:448) > at > org.apache.ode.store.ProcessStoreImpl$4.call(ProcessStoreImpl.java:435) > at > > org.apache.ode.store.ProcessStoreImpl$Callable.call(ProcessStoreImpl.java:809) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > at > > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > ... 1 more > > But the deployment directory had HelloWorld2-1 folder and > HelloWorld2-1.deployed file. I think this is because of setting the version > to 2. Can you explain this? > > > > On 10 May 2015 at 10:15, Sathwik B P <sathwik...@gmail.com> wrote: > > > Watch out for the race conditions with the two DeploymentPoller one on > each > > ODE instance working on the same deploy directory. > > > > > > On Sun, May 10, 2015 at 9:44 AM, sudharma subasinghe < > > suba...@cse.mrt.ac.lk> > > wrote: > > > > > Hi, > > > > > > I used separate deploy directories for both ODE instances. I will > > configure > > > the path to share the same directory. > > > > > > Thank you. > > > > > > On 9 May 2015 at 23:47, Tammo van Lessen <tvanles...@gmail.com> wrote: > > > > > > > Hi Sudharma, > > > > > > > > did both ODE instances operate on the same deploy directory? Or do > they > > > > have their own? The basic assumption is that both share the same, > > > > synchronized data, thus I'd recommend to either use a symlink or > > > configure > > > > the path by setting the "ode-axis2.deploy.dir" property in > > > > WEB-INF/conf/ode-axis2.properties. > > > > > > > > Best, > > > > Tammo > > > > > > > > On Tue, May 5, 2015 at 5:18 PM, sudharma subasinghe < > > > suba...@cse.mrt.ac.lk > > > > > > > > > wrote: > > > > > > > > > Hi, > > > > > > > > > > I checked the behavior of ODE using two tomcat servers when > deploying > > > > same > > > > > HelloWorld2 sample. Following are the things I could observe. > > > > > > > > > > > > > > > - > > > > > > > > > > deployed HelloWorld2-1 in Tomcat-1 server → Active state > > > > > - > > > > > > > > > > deployed HelloWorld2-2 in Tomcat-2 server → Active state > > > > > - > > > > > > > > > > deployed HelloWorld2-3 in Tomcat-1 server → HelloWorld2-1 > Retired > > > from > > > > > Active state > > > > > - > > > > > > > > > > undeployed HelloWorld2-3 → but still in the database in Active > > state > > > > > - > > > > > > > > > > deployed HelloWorld2-4 in Tomcat-2 server → HelloWorld2-2 > Retired > > > from > > > > > Active state > > > > > - > > > > > > > > > > All these details are shared by the two ode engines. > > > > > > > > > > 1) I can't undeploy a process through the browser. So I removed the > > > whole > > > > > folder and .deployed file. But in the shared database that process > is > > > > still > > > > > in the Active state. > > > > > > > > > > 2) Though HelloWorld2-1, is deployed in Tomcat-1 server and > > > > HelloWorld2-2, > > > > > HelloWorld2-4 are deployed in Tomcat-2 server all the deployed > > details > > > > are > > > > > shown in both browsers. > > > > > > > > > > Can you explain reasons for 1) and 2) ? > > > > > > > > > > Thank you > > > > > > > > > > > > > > > > > > > > > -- > > > > Tammo van Lessen - http://www.taval.de > > > > > > > > > >
