You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hbase.apache.org by "Bryan Beaudreault (Jira)" <ji...@apache.org> on 2022/08/05 14:23:00 UTC

[jira] [Created] (HBASE-27276) Reduce reflection usage in Filter deserialization

Bryan Beaudreault created HBASE-27276:
-----------------------------------------

             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.

 



--
This message was sent by Atlassian Jira
(v8.20.10#820010)