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View Code? Open in Web Editor NEWVarys: Efficient Clairvoyant Coflow Scheduler
Varys: Efficient Clairvoyant Coflow Scheduler
Varys control plane already uses netty through Akka.
Consider doing the same for dataplane, specially for overloaded cases. Points of entry: varys.framework.DataServer
and varys.framework.client.VarysClient
Set varys.master.numInstances
> 1 and run the BroadcastService
example with a large file (e.g., 32MB) should reproduce the bug. I suspect it to be a race condition somewhere.
varys.master.numInstances
determines the number of MasterActor, which should've helped with processing too many messages. Setting it to 1 isn't really that bad because most of the time is spent in (de)serialization and not in actual action.
It's really a tedious work to revise all the 'send' and 'receive' calls in the yarn framework, is there any ongoing work on this? how did the experiments in the varys paper conduct? i just want to have a look at the flow characteristics of yarn and spark.
Thanks
-Hui
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