JiangHua Zhu created HDFS-16134:
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Summary: Optimize RPC throughput
Key: HDFS-16134
URL: https://issues.apache.org/jira/browse/HDFS-16134
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: JiangHua Zhu
Now RPC has the following phenomena:
1. Each RPC has 1 Responder, which is used to return the result, but many
client requests are directly returned after the handler is processed;
2. Call#Connection#responseQueue uses synchronous control every time it is used;
These phenomena will hinder the performance of RPC, we can try to make some
changes.
1. Set multiple responders for each RPC, and the user returns the result;
2. After the Handler processing is completed, add the results that need to be
returned to a queue, and the Responder will process the queue data;
3. Add an identifier similar to sequenceId to ensure the order of return;
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