Make MapTask.MapOutputBuffer logic more understandable
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Key: MAPREDUCE-1329
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1329
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: task
Reporter: Chris Douglas
Assignee: Chris Douglas
As noted
[here|https://issues.apache.org/jira/browse/MAPREDUCE-64?focusedCommentId=12790569&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12790569],
the collection logic could be clarified by explicitly separating states rather
than inferring status by examining low-level markers. Similarly, abstractions
for metadata, etc. should replace the offset arithmetic that
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