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Posted to mapreduce-dev@hadoop.apache.org by "Devaraj Das (JIRA)" <ji...@apache.org> on 2010/09/24 20:29:32 UTC

[jira] Created: (MAPREDUCE-2089) JobToken should be passed over RPC

JobToken should be passed over RPC
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                 Key: MAPREDUCE-2089
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2089
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: client, job submission, jobtracker, security, task, tasktracker
            Reporter: Devaraj Das
            Assignee: Devaraj Das
             Fix For: 0.22.0


JobToken file is currently created by the JobTracker, and stored in the HDFS. Later on, the TaskTrackers pull that file from the HDFS as part of job localization. The HDFS operations can be avoided if the the jobToken file is passed over RPC (Jobclient -> JobTracker -> TaskTrackers).

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