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From "Alejandro Abdelnur (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3727) jobtoken location property in jobconf refers to wrong jobtoken file
Date Wed, 25 Jan 2012 19:33:41 GMT
jobtoken location property in jobconf refers to wrong jobtoken file
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                 Key: MAPREDUCE-3727
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3727
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: security
    Affects Versions: 1.0.0
            Reporter: Alejandro Abdelnur
            Assignee: Alejandro Abdelnur
            Priority: Critical


Oozie launcher job (for MR/Pig/Hive/Sqoop action) reads the location of the jobtoken file
from the *HADOOP_TOKEN_FILE_LOCATION* ENV var and seeds it as the *mapreduce.job.credentials.binary*
property in the jobconf that will be used to launch the real (MR/Pig/Hive/Sqoop) job.

The MR/Pig/Hive/Sqoop submission code (via Hadoop job submission) uses correctly the injected
*mapreduce.job.credentials.binary* property to load the credentials and submit their MR jobs.

The problem is that the *mapreduce.job.credentials.binary* property also makes it to the tasks
of the MR/Pig/Hive/Sqoop MR jobs.

If for some reason the MR/Pig/Hive/Sqoop MR code does some logic that triggers the credential
loading, because the property is set, the credential loading fails trying to load a jobtoken
file of the launcher job which does not exists in the context of the MR/Pig/Hive/Sqoop jobs.

More specifically, we are seeing this happening with certain hive queries that trigger a conditional
code within their RowContainer which then uses the FileInputFormat.getSplits() and then the
TokenCache tries to load credentials for a file that is for the wrong job.


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