Hi! The web Frontend needs to "intercept" the execution plan when the call to "execute()" comes, which is done with a special exception. The error message says it failed, which is typically because that exception was caught.
However, in your code I see nothing that should prevent that plan interception. Is the problem reproducible? Greetings, Stephan Am 02.11.2014 16:36 schrieb "Vasiliki Kalavri" <[email protected]>: > Hi all, > > when using the web client to upload and run a jar, the optimizer plan for > my program does not appear. > I have checked the "Show optimizer plan" box and provided args in the > Arguments field. > When I continue to submit the job, it runs correctly. There is no problem > when using the plan visualizer tool. > > Checking the webclient logs, I see this exception in the .log file: > > org.apache.flink.client.program.ProgramInvocationException: The program > plan could not be fetched. The program silently swallowed the control flow > exceptions. > at > org.apache.flink.client.program.PackagedProgram.getPreviewPlan(PackagedProgram.java:243) > at > org.apache.flink.client.web.PactJobJSONServlet.doGet(PactJobJSONServlet.java:90) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) > at > org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:532) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:965) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:388) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:187) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:901) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117) > at > org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:47) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113) > at org.eclipse.jetty.server.Server.handle(Server.java:352) > at > org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:596) > at > org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1048) > at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:549) > at > org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:211) > at > org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:425) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:489) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436) > at java.lang.Thread.run(Thread.java:745) > > and the usage message in the .out file, as if I did not provide the > correct number of arguments (which I did). > > If it helps, here's the program I was trying to visualize: > https://github.com/vasia/incubator-flink/blob/semimetric-preprocessing/flink-examples/flink-java-examples/src/main/java/org/apache/flink/examples/java/preprocessing/Jaccard.java > > Anything I'm missing here? > > Thanks, > V. >
