2013-09-27 20:23:19 +00:00
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Yarn Scheduler Load Simulator (SLS)
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SLS is a stress and performance harness for the Yarn Resource Manager Scheduler
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that exercises the scheduler implementation simulating the cluster size and the
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applications load without having to have a cluster nor applications.
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SLS runs a regular RM without RPC endpoints and uses a NodeManager and
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Application Manager simulators to send and receive events simulating cluster
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and application load behavior.
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2015-02-03 21:20:41 +00:00
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==== Quick Start ====
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Let $HADOOP_ROOT represent the Hadoop install directory. If you build Hadoop
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yourself, $HADOOP_ROOT is hadoop-dist/target/hadoop-$VERSION. The simulator
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is located at $HADOOP_ROOT/share/hadoop/tools/sls. The folder sls contains
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four directories: bin (running scripts), html (web portal to view progress),
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sample-conf (some example configurations), and sample-data (an example rumen
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trace).
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STEP 1: Copy all configuration files (under sample-conf) to $HADOOP_ROOT/etc/hadoop.
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STEP 2: Go to the $HADOOP_ROOT/share/hadoop/tools/sls directory, and run the simulator
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using the sample rumen trace (under sample-data).
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bin/slsrun.sh —-input-rumen=sample-data/2jobs2min-rumen-jh.json —-output-dir=sample-output
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The simulator will start to run, and you can track the running progress
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using its web portal (http://$HOST:10001/simulate, where $HOST is the place
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where you run the simulator.). All collected scheduler metrics are stored
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under the output-dir during running. This trace takes about 3 mins to finish.
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For more detailed setup, you can check out the document
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(http://issues.apache.org/jira/secure/attachment/12604817/YARN-1021.pdf)
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