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https://issues.apache.org/jira/browse/CAMEL-18844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17652259#comment-17652259
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Rafał Gała commented on CAMEL-18844:
------------------------------------
I tried on below versions and it behaves exactly the same way on each of them:
{noformat}
java version "11.0.17" 2022-10-18 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.17+10-LTS-269)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.17+10-LTS-269, mixed
mode){noformat}
and
{noformat}
java version "11.0.16" 2022-07-19 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.16+11-LTS-199)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.16+11-LTS-199, mixed mode)
{noformat}
> Possible memory leak in org.apache.camel.impl.console.EventConsole
> ------------------------------------------------------------------
>
> Key: CAMEL-18844
> URL: https://issues.apache.org/jira/browse/CAMEL-18844
> Project: Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 3.20.0
> Reporter: Rafał Gała
> Priority: Critical
> Fix For: 3.21.0, 3.20.1
>
>
> Today I have upgraded from 3.18.4 to 3.20.0 and did tests under heavy load as
> usual. After processing of approximately 3 millions of exchanges JVM's heap
> usage reached 4GB and it ran out of memory. I analyzed a dump in Eclipse MAT
> and it showed the following:
> {noformat}
> One instance of org.apache.camel.spring.boot.SpringBootCamelContext loaded by
> org.apache.catalina.loader.ParallelWebappClassLoader @ 0x700b5adb0 occupies 3
> 276 629 016 (97,38%) bytes. The memory is accumulated in one instance of
> java.lang.Object[], loaded by <system class loader>, which occupies 3 276 529
> 992 (97,38%)
> bytes.Keywordsorg.apache.camel.spring.boot.SpringBootCamelContextorg.apache.catalina.loader.ParallelWebappClassLoader
> @ 0x700b5adb0java.lang.Object[]{noformat}
> I discovered that the *java.util.ArrayDeque* instance in
> *org.apache.camel.impl.console.EventConsole* instance (most probably the
> exchangeEvents one) contains references to over 12 millions of various
> org.apache.camel.impl.event.* objects, like {*}ExchangeCreatedEvent{*},
> *ExchangeSentEvent* etc.
> I will investigate this further, but it looks like the poll method on
> ArrayDeque does not do something as expected or is used in a wrong way:)
>
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