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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10927) Ran `hadoop credential` expecting usage, got NPE instead
Date Mon, 04 Aug 2014 21:40:12 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14085339#comment-14085339
] 

Andrew Wang commented on HADOOP-10927:
--------------------------------------

Just one nitty nit from me, if the arg is -help and we print the help, that sounds like successful
operation to me. We should return 0 in these cases (I see 3 in init).

+1 pending that.

> Ran `hadoop credential` expecting usage, got NPE instead
> --------------------------------------------------------
>
>                 Key: HADOOP-10927
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10927
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>            Priority: Minor
>         Attachments: HADOOP-10927-1.diff, HADOOP-10927-2.diff, HADOOP-10927.diff
>
>
> {noformat}
> $ hadoop credential
> java.lang.NullPointerException
> 	at org.apache.hadoop.security.alias.CredentialShell.run(CredentialShell.java:67)
> 	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> 	at org.apache.hadoop.security.alias.CredentialShell.main(CredentialShell.java:420)
> {noformat}
> Ran a no-arg version of {{hadoop credential}} expecting to get the usage/help message
(like other commands act), and got the above exception instead.



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