The discussion is held on the dev mailing list: https://lists.apache.org/thread.html/rfed34be1651aa15fbdd0b3cac0d5607fa34886c1cf1aacf06684e995%40%3Cdev.flink.apache.org%3E .
Cheers, Till On Sat, Aug 1, 2020 at 8:16 AM Xia Rui <xia...@smail.nju.edu.cn> wrote: > Hello, everyone. > > I am trying to use Flink-Gelly. The version of Flink I used is 1.11 (I > also tried 1.12, and it does not work as well). > > > > Following the instruction in > https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/libs/gelly/ > . > > First, I build my Flink code with: > > (1) git clone https://github.com/apache/flink.git > > (2) mvn package –DskipTests > > Then, I copy some Gelly lib to Flink’s lib directory > > (3) cp opt/flink-gelly_2.11-1.11-SNAPSHOT.jar lib/ > > Next, I start the cluster with standalone mode > > (4) ./bin/start-cluster.sh > > By the way, all the Flink configuration in “flink-conf.yaml” is set as > default. > > Finally, I run the code from Gelly, and get Error. > > (5) ./bin/flink run > examples/gelly/flink-gelly-examples_2.11-1.11-SNAPSHOT.jar \ > > --algorithm GraphMetrics --order directed \ > > --input RMatGraph --type integer --scale 20 --simplify directed \ > > --output print > > This is the error message: > > > > org.apache.flink.client.program.ProgramInvocationException: The main > method caused an error: No result found for job, was execute() called > before getting the result? > > at > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:302) > > at > org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:198) > > at > org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:149) > > at > org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:699) > > at > org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:232) > > at > org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:916) > > at > org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:992) > > at > org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30) > > at > org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:992) > > Caused by: java.lang.NullPointerException: No result found for job, was > execute() called before getting the result? > > at > org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:75) > > at > org.apache.flink.graph.AnalyticHelper.getAccumulator(AnalyticHelper.java:81) > > at > org.apache.flink.graph.library.metric.directed.VertexMetrics.getResult(VertexMetrics.java:116) > > at > org.apache.flink.graph.library.metric.directed.VertexMetrics.getResult(VertexMetrics.java:56) > > at > org.apache.flink.graph.drivers.GraphMetrics.printAnalytics(GraphMetrics.java:113) > > at org.apache.flink.graph.Runner.execute(Runner.java:458) > > at org.apache.flink.graph.Runner.main(Runner.java:507) > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > > at java.lang.reflect.Method.invoke(Method.java:498) > > at > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:288) > > ... 8 more > > > > I have checked the log of jobmanager and taskmanager, and no error is > reported. > > > > The error seems to imply that the ‘lastJobExecutionResult’ in > ‘ExecutionEnvironment’ is null. But I have already submit the job, and it > is running. > > > > Could you share me some idea about my problem? > > > > Thank you very much. > > Rui Xia >
