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

Posted to issues@beam.apache.org by "Sam Whittle (Jira)" <ji...@apache.org> on 2021/01/19 11:41:00 UTC

[jira] [Created] (BEAM-11657) Kafka read performance regression due to added header support

Sam Whittle created BEAM-11657:
----------------------------------

             Summary: Kafka read performance regression due to added header support
                 Key: BEAM-11657
                 URL: https://issues.apache.org/jira/browse/BEAM-11657
             Project: Beam
          Issue Type: Bug
          Components: io-java-kafka
            Reporter: Sam Whittle
            Assignee: Sam Whittle


Support for headers in KafkaIO reads was recently added:
https://issues.apache.org/jira/browse/BEAM-10865

This introduced several reflection calls into the path of advancing KafkaUnboundedReader.  While separately running benchmarks, I noticed this regression.  

Calls currently come from:
ConsumerSpEL.hasHeaders -> can be cached similar to other booleans
deserialize key and value methods -> could be avoided in cases where headers are not being examined (at a minimum can be avoided for known coders like ByteArrayDeserializer)



--
This message was sent by Atlassian Jira
(v8.3.4#803005)