Github user mxm commented on a diff in the pull request: https://github.com/apache/flink/pull/1214#discussion_r43098268 --- Diff: flink-clients/src/main/java/org/apache/flink/client/CliFrontend.java --- @@ -909,7 +919,21 @@ private int handleError(Throwable t) { } LOG.error("Error while running the command.", t); - t.printStackTrace(); + // check if the error was due to an invalid program in detached mode. + if (t instanceof ProgramInvocationException && t.getCause() instanceof DetachedProgramException) { + System.err.println(t.getCause().getMessage()); + // now trace to the user's main method. We don't wanna show unnecessary information + // in this particular case. --- End diff -- Why in this case? Doesn't that apply to all errors that occur during interactive execution?
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