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[ https://issues.apache.org/jira/browse/HADOOP-3888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619411#action_12619411 ]

Vivek Ratan commented on HADOOP-3888:
-------------------------------------

I'd suggest that you should go ahead and provide a patch. HADOOP-3412, which changed JobTracker.java a fair bit, is committed. Most of the scheduler work will affect other classes, not JobTracker.
Clean up the JobTracker code
----------------------------

Key: HADOOP-3888
URL: https://issues.apache.org/jira/browse/HADOOP-3888
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Affects Versions: 0.19.0
Reporter: Steve Loughran
Priority: Minor
Original Estimate: 1h
Remaining Estimate: 1h

My IDE flags a lot of trouble in the JobTracker code, but I dont want to mix those changes with any lifecycle changes. After doing that, then I'd like to clean up the code in JobTracker
-move to generic types and foreach loops over Vector and iterators.
-give all threads the correct type
-stop using package scoped static variables to pass instance-data around specifically
TASKTRACKER_EXPIRY_INTERVAL
RETIRE_JOB_CHECK_INTERVAL
RETIRE_JOB_INTERVAL
-fix up all the javadoc warnings
-remove the needless this. references on lots of local variables
-replace the log + stringifyException with log(text,exception).
Its only an hour or so of work, and would improve the code maintainability, but it would make merging existing code harder.
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postedAug 1, '08 at 11:21a
activeAug 4, '08 at 3:32a
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