The JobTracker's count of the number of running maps and reduces is wrong
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Key: HADOOP-98
URL: http://issues.apache.org/jira/browse/HADOOP-98
Project: Hadoop
Type: Bug
Components: mapred
Versions: 0.1
Reporter: Owen O'Malley
Assigned to: Owen O'Malley
Fix For: 0.1
When a heatbeat comes in from a task tracker, the job tracker just adds the
number of currently running maps and reduces. The jobs from the previous
heartbear are never subtracted. This causes the scheduling to misjudge the
"loading" levels of the task trackers.
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