[jboss-jira] [JBoss JIRA] (WFLY-12330) Jandex index retention on Weld

[Teresa Miyar Gil (Jira)]

     [ https://issues.jboss.org/browse/WFLY-12330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Teresa Miyar Gil reassigned WFLY-12330:
---------------------------------------

    Assignee: Matěj Novotný  (was: Teresa Miyar Gil)


> Jandex index retention on Weld
> ------------------------------
>
>                 Key: WFLY-12330
>                 URL: https://issues.jboss.org/browse/WFLY-12330
>             Project: WildFly
>          Issue Type: Bug
>          Components: CDI / Weld
>    Affects Versions: 17.0.1.Final
>         Environment: Red Hat JBoss Enterprise Application Platform 7.2 CP 2
>            Reporter: Teresa Miyar Gil
>            Assignee: Matěj Novotný
>            Priority: Major
>
> After deploying a huge amount of Java application in a JBoss EAP environment, it looks like a lot of Jandex index are retained in heap:
> {noformat}
> Class Name                                              |   Objects | Shallow Heap | Retained Heap
> ---------------------------------------------------------------------------------------------------
> java.lang.Object[]                                      | 1,460,530 |     85.52 MB |  >= 622.78 MB
> java.util.ArrayList                                     |   939,474 |     21.50 MB |  >= 533.32 MB
> org.jboss.jandex.Index                                  |       435 |     13.59 KB |  >= 460.42 MB
> org.jboss.as.server.deployment.annotation.CompositeIndex|       224 |      3.50 KB |  >= 458.73 MB
> java.util.HashMap                                       | 1,143,351 |     52.34 MB |  >= 405.49 MB
> java.util.HashMap$Node[]                                |   897,613 |     89.82 MB |  >= 395.81 MB
> java.util.HashMap$Node                                  | 4,110,870 |    125.45 MB |  >= 317.86 MB
> org.jboss.jandex.ClassInfo                              |   491,618 |     22.50 MB |  >= 301.04 MB
> ---------------------------------------------------------------------------------------------------
> {noformat}
> Test done with heap defined with 4Gb, started nicely with about ~150 applications and slowly increased it until about 200. Less heap then that leads into OOME.
> Heap: Size: 1.4 GB Classes: 49.5k Objects: 38.6m Class Loader: 1.8 + 900mb ready for GC.
> The same behavior is not seen in EAP 6.4.21 and all those 200 can be easily deployed within 1 GB heap size.



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