[jira] [Created] (FLINK-20973) failed to submit flink-on-yarn job on Windows due to error of classPath

[Shang Yuanchun (Jira)]

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}
 

 

 



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