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https://issues.apache.org/jira/browse/FLINK-19439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17203219#comment-17203219
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Dawid Wysakowicz commented on FLINK-19439:
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I will take a closer look, but I don't think it is an issue. The change indeed
might slow down the processing, but only for the first incoming record /per
parallel instance. We initialize Avro classes when the first record arrives and
with the linked change we use reflection there. We do that only once for the
entire lifetime of a DeserializationSchema, though. Therefore the initial
penalty should wear off in the long run.
> Performance regression on 24.09.2020
> ------------------------------------
>
> Key: FLINK-19439
> URL: https://issues.apache.org/jira/browse/FLINK-19439
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System, Benchmarks
> Affects Versions: 1.12.0
> Reporter: Piotr Nowojski
> Priority: Blocker
>
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerAvro&env=2
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