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https://issues.apache.org/jira/browse/ARTEMIS-3025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clebert Suconic closed ARTEMIS-3025.
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> JsonReader char[] leak
> ----------------------
>
> Key: ARTEMIS-3025
> URL: https://issues.apache.org/jira/browse/ARTEMIS-3025
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
> Priority: Major
> Fix For: 2.17.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The default Json provider ie https://github.com/apache/johnzon is using
> several pools while parsing eg {{org.apache.johnzon.max-string-length}} that
> wouldn't pool char[] if the JsonReader isn't properly closed.
> Currently we're not properly closing such readers and that means that we
> allocate {{org.apache.johnzon.max-string-length}} * 2 bytes on each handled
> notification ~ 20 MiB.
> Until https://bugs.openjdk.java.net/browse/JDK-8027959 ie JDK u40, with G1GC
> the mentioned char[] was (very likely) allocated into the old generation as
> Humongous Allocation, needing a Full GC to release it.
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