[jira] [Commented] (CRUNCH-600) Credentials are lost in local runner mode

["Micah Whitacre (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CRUNCH-600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15235327#comment-15235327 ] 

Micah Whitacre commented on CRUNCH-600:
---------------------------------------

+1 and thanks for the patch.

It has now been pushed to master.

> Credentials are lost in local runner mode
> -----------------------------------------
>
>                 Key: CRUNCH-600
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-600
>             Project: Crunch
>          Issue Type: Bug
>            Reporter: Igor Bernstein
>            Assignee: Micah Whitacre
>            Priority: Minor
>             Fix For: 0.14.0
>
>         Attachments: CRUNCH-600-c.patch
>
>
> The credentials attached to a job are lost when CrunchOutputs builds a new Job in getJob.
> For example, the following scenario fails:
> {code:title=MyTarget.java}
> class MyTarget implements MapReduceTarget {
>   void configureForMapReduce(Job job, PType<?> ptype, Path outputPath, String name) {
>     job.getCredentials().addSecretKey("myPassword", "secret".getBytes());
>     CrunchOutputs.addNamedOutput(job, name, FormatBundle.forOutput(MyOutputFormat.class), Object.class);
>   }
>   //..
> }
> {code}
> {code:title=MyOutputFormat.java}
> class MyOutputFormat extends OutputFormat<Object,Object> {
>   public RecordWriter<Object, Object> getRecordWriter(TaskAttemptContext context) throws IOException, InterruptedException {
>     Assert.equals("secret".getBytes(), context.getCredentials().getSecretKey("myPassword"));
>   }
> }
> {code}
> This happens because CrunchOutputs.getJob copies the baseConf using the base Configuration class and the base Configuration class doesn't have a notion of Credentials, so the credentials get dropped.
> This issue only manifests itself when using the local runner. In an actual hadoop cluster the credentials will be inherited from UserGroupInformation.



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