James Zhao created MESOS-265:
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Summary: Master hogs CPU
Key: MESOS-265
URL: https://issues.apache.org/jira/browse/MESOS-265
Project: Mesos
Issue Type: Bug
Components: master
Environment: * Cluster of 6 CentOS machines; 24 cores / 256G RAM each.
* Large data file (1b records, 100GB) retrieved via HDFS.
* Simple jobs (eg. count records by key, where key takes 20 possible values)
using Spark with local modifications.
Reporter: James Zhao
CPU usage of the master slowly grows until eventually it stops working.
Upon launch, CPU usage is about 1%. After running just 1 job, it climbs to 20%
(even after the job has stopped), and upon running more jobs, quickly grows to
50%. It then continues to grow at a slower rate until eventually it stops
responding (after perhaps several hundred jobs).
Screenshot: http://math.stanford.edu/~jyzhao/mesos-cpu.png (there are no active
jobs, but lt-mesos-master is using 75% CPU)
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