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Apache Hama already ships with a default implementation of Apache Hadoop RPC, but there are a plenty of other RPC protocols (ProtoBuf, Avro, Thrift) that can be used for it as well.
Architecture
TODO
Server
TODO
Client
Each task has its own MessageManager which is responsible for starting an Server where messages can be received and send to other servers.
The default implementation of Apache Hama is org.apache.hama.bsp.message.HadoopMessageManagerImpl which uses Hadoop's RPC mechanisms.
Adding more implementations
We aim to add alot more RPC frameworks to Apache Hama for the next upcoming releases.
If you're interested in implementing another framework for communication please let us know at the dev-mailing list or post in this JIRA issue.TODO
Configuring
Your implemenation can be set by the configuration values:
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