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ConPaaS-team / conpaas

ConPaaS: integrated runtime environment for elastic cloud applications
http://www.conpaas.eu
BSD 3-Clause "New" or "Revised" License
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Nutshell: the MapReduce service freezes the nutshell #80

Closed tcrivat closed 9 years ago

tcrivat commented 9 years ago

I wasn't able to successfully run the MapReduce service inside the Nutshell. The service is created and starts just fine, but soon after the service starts, the nutshell VM becomes very slow and unresponsive. The web frontend does not load anymore, the command line interface commands block etc. Not even "nova list" works anymore. It seems that the VM runs out of memory. I'm not sure what causes this and what can be done in this case.

On Amazon EC2 or OpenNebula, the MapReduce service works fine so this is probably a nutshell-specific issue.

tcrivat commented 9 years ago

I tried to increase the amount of memory allocated to the Nutshell VM from 3.5 GB to 5 GB. Now The MapReduce service works well with only one agent, but the same problems appear when I start the second agent. It seems that the MapReduce service needs huge amounts of memory. There's probably not much we can do about that.