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

[Julien OPOIX (Jira)]

Julien OPOIX created AVRO-3911:
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             Summary: 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
         Attachments: genericdatumreader.contention.png

Hi,

Since https://issues.apache.org/jira/browse/AVRO-3531 we have noticed a very 
high CPU contention on the `stringClassCache` of the `GenericDatumReader`:
[https://github.com/apache/avro/blame/a2b37cf490108366913e32ed774105be6feafadb/lang/java/avro/src/main/java/org/apache/avro/generic/GenericDatumReader.java#L567]



 



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