I quickly talked to Till about this. The new JobManager, once FLIP-6 is implemented, will have a new REST endpoint that allows submitting a JobGraph directly. With this, we no longer have to execute the user main() method in the WebRuntimeMonitor (which is a component that the current JobManager process loads to serve the web frontend and the REST interface).
This should solve the problem, but unfortunately it doesn't solve your current problem. Best, Aljoscha > On 8. Aug 2017, at 10:26, Francisco Gonzalez Barea > <francisco.gonza...@piksel.com> wrote: > > Aha ok… Thanks for your answer Eron. > > Regards > > >> On 7 Aug 2017, at 19:04, Eron Wright <eronwri...@gmail.com >> <mailto:eronwri...@gmail.com>> wrote: >> >> When you submit a program via the REST API, the main method executes inside >> the JobManager process. Unfortunately a static variable is used to >> establish the execution environment that the program obtains from >> `ExecutionEnvironment.getExecutionEnvironment()`. From the stack trace it >> appears that two main methods are executing simultaneously and one is >> corrupting the other. >> >> On Mon, Aug 7, 2017 at 8:21 AM, Francisco Gonzalez Barea >> <francisco.gonza...@piksel.com <mailto:francisco.gonza...@piksel.com>> wrote: >> Hi there! >> >> We are doing some POCs submitting jobs remotely to Flink. We tried with >> Flink CLI and now we´re testing the Rest API. >> >> So the point is that when we try to execute a set of requests in an async >> way (using CompletableFutures) only a couple of them run successfully. For >> the rest we get the exception copied at the end of the email. >> >> Do you know the reason for this? >> >> Thanks in advance!! >> Regards, >> >> org.apache.flink.client.program.ProgramInvocationException: The main method >> caused an error. >> at >> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:545) >> at >> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:419) >> at >> org.apache.flink.client.program.OptimizerPlanEnvironment.getOptimizedPlan(OptimizerPlanEnvironment.java:80) >> at >> org.apache.flink.client.program.ClusterClient.getOptimizedPlan(ClusterClient.java:318) >> at >> org.apache.flink.runtime.webmonitor.handlers.JarActionHandler.getJobGraphAndClassLoader(JarActionHandler.java:72) >> at >> org.apache.flink.runtime.webmonitor.handlers.JarRunHandler.handleJsonRequest(JarRunHandler.java:61) >> at >> org.apache.flink.runtime.webmonitor.handlers.AbstractJsonRequestHandler.handleRequest(AbstractJsonRequestHandler.java:41) >> at >> org.apache.flink.runtime.webmonitor.RuntimeMonitorHandler.respondAsLeader(RuntimeMonitorHandler.java:109) >> at >> org.apache.flink.runtime.webmonitor.RuntimeMonitorHandlerBase.channelRead0(RuntimeMonitorHandlerBase.java:97) >> at >> org.apache.flink.runtime.webmonitor.RuntimeMonitorHandlerBase.channelRead0(RuntimeMonitorHandlerBase.java:44) >> at >> io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) >> at >> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339) >> at >> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324) >> at io.netty.handler.codec.http.router.Handler.routed(Handler.java:62) >> at >> io.netty.handler.codec.http.router.DualAbstractHandler.channelRead0(DualAbstractHandler.java:57) >> at >> io.netty.handler.codec.http.router.DualAbstractHandler.channelRead0(DualAbstractHandler.java:20) >> at >> io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) >> at >> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339) >> at >> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324) >> at >> org.apache.flink.runtime.webmonitor.HttpRequestHandler.channelRead0(HttpRequestHandler.java:159) >> at >> org.apache.flink.runtime.webmonitor.HttpRequestHandler.channelRead0(HttpRequestHandler.java:65) >> at >> io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) >> at >> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339) >> at >> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324) >> at >> io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) >> at >> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339) >> at >> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324) >> at >> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242) >> at >> io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:147) >> at >> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339) >> at >> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324) >> at >> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847) >> at >> io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131) >> at >> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511) >> at >> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468) >> at >> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382) >> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354) >> at >> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111) >> at >> io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137) >> at java.lang.Thread.run(Thread.java:748) >> \nCaused by: java.util.ConcurrentModificationException >> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) >> at java.util.ArrayList$Itr.next(ArrayList.java:851) >> at >> org.apache.flink.api.java.operators.OperatorTranslation.translateToPlan(OperatorTranslation.java:49) >> at >> org.apache.flink.api.java.ExecutionEnvironment.createProgramPlan(ExecutionEnvironment.java:1065) >> at >> org.apache.flink.api.java.ExecutionEnvironment.createProgramPlan(ExecutionEnvironment.java:1032) >> at >> org.apache.flink.client.program.OptimizerPlanEnvironment.execute(OptimizerPlanEnvironment.java:47) >> at com.piksel.sequoia.media.common.launcher.Launcher.main(Launcher.java:56) >> 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:528) >> ... 39 more\n”} >> >> >> This message is private and confidential. If you have received this message >> in error, please notify the sender or serviced...@piksel.com >> <mailto:serviced...@piksel.com> and remove it from your system. >> >> Piksel Inc is a company registered in the United States, 2100 Powers Ferry >> Road SE, Suite 400, Atlanta, GA 30339 >> >> >
