[MUMAK] Randomize the arrival of heartbeat responses
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Key: MAPREDUCE-1306
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1306
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: contrib/mumak
Affects Versions: 0.21.0, 0.22.0
Reporter: Tamas Sarlos
Assignee: Tamas Sarlos
Fix For: 0.21.0, 0.22.0
We propose to make the following changes to mumak, MAPREDUCE-728
- make the timing of heartbeat responses more realistic by adding an option to
randomly perturb them
- randomize the startup time of task trackers in a fixed interval
- remove 2 magic constants from SimulatorEngine and make sure that the first
job is submitted only after the entire cluster is up and running
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