Bryan Beaudreault created HBASE-27276:
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Summary: Reduce reflection usage in Filter deserialization
Key: HBASE-27276
URL: https://issues.apache.org/jira/browse/HBASE-27276
Project: HBase
Issue Type: Improvement
Reporter: Bryan Beaudreault
Attachments: async-prof-pid-9037-cpu-1.html
Running hbase 2.4.x, I recently profiled one of our clusters which does a very
high volume of random reads. An astonishing 12% of CPU time was just spent
deserializing in ProtobufUtil.toFilter.
One immediate thought would be to cache String -> Class mappings. Currently
Class.forName shows up multiple times (6 in my example) in the profile, each
time taking over 1%. I think this is partially due to using FilterList in this
example.
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