FAQ
The RPC server Listener thread is a scalability bottleneck
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Key: HADOOP-6713
URL: https://issues.apache.org/jira/browse/HADOOP-6713
Project: Hadoop Common
Issue Type: Improvement
Components: ipc
Affects Versions: 0.20.2, 0.20.1, 0.20.0
Reporter: dhruba borthakur
Assignee: Dmytro Molkov


The Hadoop RPC Server implementation has a single Listener thread that reads data from the socket and puts them into a call queue. This means that this single thread can pull RPC requests off the network only as fast as a single CPU can execute. This is a scalability bottlneck in our cluster.

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postedApr 19, '10 at 5:55a
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