[
https://issues.apache.org/jira/browse/FLINK-19440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17204639#comment-17204639
]
Dawid Wysakowicz commented on FLINK-19440:
------------------------------------------
I can confirm that upgrading Avro to version 1.10 causes performance
regression. I run the benchmarks locally with avro 1.10 and also with
downgraded avro version (1.8.2) and I can see similar differences in
performance. Downgrading avro should be as simple as declaring a different avro
version.
The upgrade of default avro version was requested multiple times and also is
needed to fix some of security vulnerabilities (as was mentioned in the ticket
for upgrading Avro). There are no switches or such, that could improve the
performance. It's just that Avro introduced additional logic which fixes a
couple of features (e.g. logical types) on the hot path which simply slows down
the performance. Therefore I think we just have to leave with the regression.
The only thing I think we can do is mention the performance regression and
possible downgrading in the release notes. WDYT [~pnowojski] [~AHeise]?
> Performance regression on 15.09.2020
> ------------------------------------
>
> Key: FLINK-19440
> URL: https://issues.apache.org/jira/browse/FLINK-19440
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System, Benchmarks
> Affects Versions: 1.12.0
> Reporter: Piotr Nowojski
> Assignee: Dawid Wysakowicz
> Priority: Blocker
>
> {{serializerAvro}} benchmark is showing a regression on 15.09.2020:
> http://codespeed.dak8s.net:8000/timeline/?ben=serializerAvro&env=2
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
