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Posted to issues@avro.apache.org by "Julien OPOIX (Jira)" <ji...@apache.org> on 2023/12/07 14:43:00 UTC

[jira] [Reopened] (AVRO-3911) High CPU contention in GenericDatumReader

     [ https://issues.apache.org/jira/browse/AVRO-3911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julien OPOIX reopened AVRO-3911:
--------------------------------

I forgot to mention that I have this issue using JDK17 and JDK21, https://issues.apache.org/jira/browse/AVRO-3903 seems related to jdk8

> High CPU contention in GenericDatumReader
> -----------------------------------------
>
>                 Key: AVRO-3911
>                 URL: https://issues.apache.org/jira/browse/AVRO-3911
>             Project: Apache Avro
>          Issue Type: Task
>          Components: java
>    Affects Versions: 1.11.3
>            Reporter: Julien OPOIX
>            Priority: Major
>              Labels: jdk17, jdk21
>         Attachments: genericdatumreader.contention.png
>
>
> Hi,
> Since AVRO-3531 we have noticed a very high CPU contention on the _stringClassCache_ of the [GenericDatumReader|https://github.com/apache/avro/blob/a2b37cf490108366913e32ed774105be6feafadb/lang/java/avro/src/main/java/org/apache/avro/generic/GenericDatumReader.java#L567]
>  



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