Jobtracker should report 99% until the query is done.
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Key: MAPREDUCE-2731
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2731
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobtracker
Reporter: Adam Kramer
Hadoop reporting 100% complete is a lie whenever the job, task, or node is not
FULLY complete. Reports of 100% due to rounding should get explicitly stuck at
99.99% until the job is complete. The current system gets things stuck at 100%,
which is simply wrong.
Even when the true % complete rounds to 100, 100% is still not appropriate to
report in the form of a percentage due to the semantics of percentages.
This bug occurs frequently when a small number of nodes from a task with many
nodes are running very slowly (i.e., the "one overloaded reducer" problem).
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