Adam Antal created HADOOP-15914: ----------------------------------- Summary: hadoop jar command has no help argument Key: HADOOP-15914 URL: https://issues.apache.org/jira/browse/HADOOP-15914 Project: Hadoop Common Issue Type: Improvement Components: common Reporter: Adam Antal
{{hadoop jar --help}} and {{hadoop jar help}} commands show outputs like this: {noformat} WARNING: Use "yarn jar" to launch YARN applications. JAR does not exist or is not a normal file: /root/--help {noformat} Only if called with no arguments: {{hadoop jar}} we get the usage text, but even in that case we get: {noformat} WARNING: Use "yarn jar" to launch YARN applications. RunJar jarFile [mainClass] args... {noformat} Where RunJar is wrapped by the hadoop script (so it should not be displayed). {{hadoop --help}} displays the following: {noformat} jar <jar> run a jar file. NOTE: please use "yarn jar" to launch YARN applications, not this command. {noformat} which is fine, but {{CommandsManual.md}} tells a bit more information about the usage of this command: {noformat} Usage: hadoop jar <jar> [mainClass] args... {noformat} My suggestion is to add a {{--help}} option to the {{hadoop jar}} command that would display this message. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-dev-h...@hadoop.apache.org