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Posted to issues@spark.apache.org by "bimal tandel (JIRA)" <ji...@apache.org> on 2016/02/12 23:54:18 UTC
[jira] [Commented] (SPARK-7367) spark-submit CLI --help -h
overrides the application arguments
[ https://issues.apache.org/jira/browse/SPARK-7367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15145490#comment-15145490 ]
bimal tandel commented on SPARK-7367:
-------------------------------------
I had a same problem today and I wrote the patch for it. I am creating a pull request.
Based on my analysis there is an unintended consequences of printing help if --help is the only argument passed.
example
spark-submit --verbose --help wont print help anymore.
Instead it prints this,
spark-submit --verbose --help
Error: Must specify a primary resource (JAR or Python or R file)
Run with --help for usage help or --verbose for debug output
> spark-submit CLI --help -h overrides the application arguments
> --------------------------------------------------------------
>
> Key: SPARK-7367
> URL: https://issues.apache.org/jira/browse/SPARK-7367
> Project: Spark
> Issue Type: Bug
> Components: Spark Submit
> Reporter: Gianmario Spacagna
> Priority: Minor
>
> The spark-submit script will parse the --help argument even if is provided as application argument.
> E.g.
> spark-submit --master local[*] --driver-memory 4G --class bar.foo.MyClass /MyLocalJAR.jar --help
> or
> spark-submit --master local[*] --driver-memory 4G --class bar.foo.MyClass /MyLocalJAR.jar -h
> If my application is using a parsing library, such as Scallop, then it will never be able to run the application with --help as argument.
> I think the spark-submit script should only print the help message when is provided as single argument like this:
> spark-submit --help
> or it should provide a separator for trailing arguments:
> spark-submit --master local[*] --driver-memory 4G --class bar.foo.MyClass /MyLocalJAR.jar -- --help --arg1 --arg2
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