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Posted to jira@kafka.apache.org by GitBox <gi...@apache.org> on 2020/08/15 08:50:48 UTC

[GitHub] [kafka] chia7712 commented on pull request #9182: KAFKA-10403 Replace scala collection by java collection in generating…

chia7712 commented on pull request #9182:
URL: https://github.com/apache/kafka/pull/9182#issuecomment-674370125


   > Can you please include more detail on how it fails currently? I assume it's some kind of deserialization error?
   
   You are right. The root cause is deserialization error. Currently, the type of collection used by ```Log4jController#getLoggers ``` (a MBean object) is scala collection (```toList.asJava```) rather than java collection. Hence, the profiler has to load scala library (scala-library.jar) to deserialize the binary to origin scala collection. For example, if I don't add scala library to JMC's classpath, JMC fails to deserialize the attribute of ```Log4jController``` and it shows "N/A" instead.


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