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https://issues.apache.org/jira/browse/AVRO-1595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16825541#comment-16825541
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Chad Juliano edited comment on AVRO-1595 at 4/24/19 10:17 PM:
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I have a service that was running out of memory. I generated some activity in
the service while monitoring in VisualVM. With each request I saw almost
everything was GC'd except RESOLVER_CACHE which kept on growing because my Avro
schemas are dynamic.
I had an ExecutorService that was keeping a pool of threads which would hold on
to the RESOLVER_CACHE even after the threads finished. I was able to work
around the issue by doing a shutdown() and creating a new thread pool with each
request. When the threads got finalized the ThreadLocal data was GC'd.
Creating new thread pools is not a problem in my case but it could be for
someone else.
was (Author: cjuliano):
I have a service that was running out of memory. I generated some activity in
the service while monitoring in VisualVM. With each request I saw almost
everything was GC'd except RESOLVER_CACHE which kept on growing because my Avro
schemas are dynamic.
I had an ExecutorService that was keeping a pool of threads which would hold on
to the RESOLVER_CACHE even after the threads finished. I was able to work
around the issue by doing a shutdown() and creating a new thread pool with each
request. When the threads got finalized the ThreadLocal data was GC'd.
Creating new thread pools is not a problem in my case but it could be for
someone else.
> Give access to remove threadlocal values
> ----------------------------------------
>
> Key: AVRO-1595
> URL: https://issues.apache.org/jira/browse/AVRO-1595
> Project: Apache Avro
> Issue Type: Improvement
> Components: java
> Reporter: Bryan Baugher
> Priority: Minor
>
> Certain JVM containers like tomcat re-use threads when re-deploying
> applications which can leave behind threadlocal values. It would be great if
> there were something that could be called on shutdown to remove these.
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