chengshiwen edited a comment on issue #4438: URL: https://github.com/apache/incubator-dolphinscheduler/issues/4438#issuecomment-759457064
Confirmed by source code: 1. Running command `bin/hadoop jar wordcount.jar org.apache.hadoop.examples.WordCount [GENERIC_OPTIONS] [COMMAND_OPTIONS]` will execute `"$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS $CLASS "$@"` with `CLASS=org.apache.hadoop.util.RunJar` ([source code](https://github.com/apache/hadoop/blob/branch-2.8.5/hadoop-common-project/hadoop-common/src/main/bin/hadoop#L166)) 2. The class `org.apache.hadoop.util.RunJar` parses the args with usage `"RunJar jarFile [mainClass] args..."`, but not parse the generic options ([source code](https://github.com/apache/hadoop/blob/branch-2.8.5/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/RunJar.java#L156)) 3. The example `WordCount` will handle generic Hadoop command-line options ([source code](https://github.com/apache/hadoop/blob/branch-2.8.5/hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/WordCount.java#L68)) 4. The class `GenericOptionsParser` will parse the options and set the configuration ([source code](https://github.com/apache/hadoop/blob/branch-2.8.5/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/GenericOptionsParser.java)) So, the `[GENERIC_OPTIONS]` and `[COMMAND_OPTIONS]` can be swapped in position and order if you use the `GenericOptionsParser`. Otherwise, this `[GENERIC_OPTIONS]` will not take effect. In other words, this issue depends on your implementation. **Conclusion**: This issue is not a bug. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
