Duong created HDDS-7167:
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Summary: Set the right default number of reader threads for
Hadoop-RPC
Key: HDDS-7167
URL: https://issues.apache.org/jira/browse/HDDS-7167
Project: Apache Ozone
Issue Type: Improvement
Components: OM, SCM
Reporter: Duong
Hadoop-RPC decouples the reading of RPC requests (readers) from connections and
the executing RPC requests (handlers) by an in-memory blocking queue.
By default, there're 100 handler threads but only 1 reader thread, and this can
easily be a bottleneck.
We did a raw RPC benchmark in OM and verified that the pure RPC performance can
be improved by more than 3X just by increasing the number of readers to 10.
We should introduce a new config for the number of RPC readers in OM and SCM
and define the right default value.
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