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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4421) Rework job-setup and job-cleanup tasks
Date Wed, 15 Oct 2008 21:06:44 GMT
Rework job-setup and job-cleanup tasks
--------------------------------------

                 Key: HADOOP-4421
                 URL: https://issues.apache.org/jira/browse/HADOOP-4421
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.19.0
            Reporter: Arun C Murthy
             Fix For: 0.20.0


Currently we have a notion of map-{setup|cleanup} TIP and reduce-{setup|cleanup} TIP of which
only 1 setup and cleanup tasks are picked by the JobInProgress. Also a lot of state-maintenence
of these TIPs are done by the JobInProgress itself, outside of the more logical place i.e.
TaskInProgress.

We really should rework this to have a single setup and cleanup task which isn't associated
with a map or reduce task i.e. into separate task _types_. What we have currently is quite
ungainly and hard to maintain.

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