[
https://issues.apache.org/jira/browse/FLINK-37435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17933736#comment-17933736
]
Gyula Fora edited comment on FLINK-37435 at 3/10/25 6:53 AM:
-------------------------------------------------------------
[~kurto] , since only reading (through the Flink KryoSerializer) seems to be
slower could it be that it is caused by your changes to the *NoFetchingInput*
class?
There is definitely an extra array copy there that could be suspicious
[https://github.com/apache/flink/blob/ef09e1716924d1e6ed64bfc273859f2de979b027/flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/NoFetchingInput.java#L93]
was (Author: gyfora):
[~kurto] , since only reading seems to be slower could it be that it is caused
by your changes to the *NoFetchingInput* class?
There is definitely an extra array copy there that could be suspicious
[https://github.com/apache/flink/blob/ef09e1716924d1e6ed64bfc273859f2de979b027/flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/NoFetchingInput.java#L93]
> Kryo related perf regression since March 5th
> --------------------------------------------
>
> Key: FLINK-37435
> URL: https://issues.apache.org/jira/browse/FLINK-37435
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System, Benchmarks
> Affects Versions: 2.0.0
> Reporter: Zakelly Lan
> Priority: Major
> Attachments: image-2025-03-07-12-29-54-443.png,
> profile-results-after.zip, profile-results-before.zip
>
>
> Seems a obvious regression across all java version.
> http://flink-speed.xyz/timeline/?exe=6%2C12%2C13&base=&ben=readKryo&env=3&revs=200&equid=off&quarts=on&extr=on
> http://flink-speed.xyz/timeline/?exe=6%2C12%2C13&base=&ben=serializerKryo&env=3&revs=200&equid=off&quarts=on&extr=on
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
