kunnni created FLINK-20973: ------------------------------ Summary: failed to submit flink-on-yarn job on Windows due to error of classPath Key: FLINK-20973 URL: https://issues.apache.org/jira/browse/FLINK-20973 Project: Flink Issue Type: Bug Components: Deployment / YARN Affects Versions: 1.11.3, 1.10.1 Reporter: kunnni
When I submitted flink-on-yarn job on Windows (Operating system of yarn cluster is Linux), I got error message: “Error: Could not find or load main class org.apache.flink.yarn.entrypoint.YarnJobClusterEntrypoint”. then I found out that Windows has different classPath delimiter with Linux as in Windows is ";", but in Linux is ":". the main cause is that classPath was built on Windows, but was splitted on Linux. the solution is to replace value of File.pathSeparator with ApplicationConstants.CLASS_PATH_SEPARATOR in class of org.apache.flink.yarn.YarnClusterDescriptor and org.apache.flink.yarn.Utils. sourceCode is displayed below: {code:java} private ApplicationReport startAppMaster(......) throws Exception { ...... // classpath assembler StringBuilder classPathBuilder = new StringBuilder(); if (userJarInclusion == YarnConfigOptions.UserJarInclusion.FIRST) { for (String userClassPath : userClassPaths) { classPathBuilder.append(userClassPath).append(File.pathSeparator); } } for (String classPath : systemClassPaths) { classPathBuilder.append(classPath).append(File.pathSeparator); } ...... // Setup CLASSPATH and environment variables for ApplicationMaster final Map<String, String> appMasterEnv = new HashMap<>(); // set user specified app master environment variables appMasterEnv.putAll( BootstrapTools.getEnvironmentVariables(ResourceManagerOptions.CONTAINERIZED_MASTER_ENV_PREFIX, configuration)); // set Flink app class path appMasterEnv.put(YarnConfigKeys.ENV_FLINK_CLASSPATH, classPathBuilder.toString()); ...... }{code} -- This message was sent by Atlassian Jira (v8.3.4#803005)