[jboss-jira] [JBoss JIRA] (DROOLS-4927) Memory leak in PrometheusKieServerExtension

[Karel Suta (Jira)]

Karel Suta created DROOLS-4927:
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             Summary: Memory leak in PrometheusKieServerExtension
                 Key: DROOLS-4927
                 URL: https://issues.redhat.com/browse/DROOLS-4927
             Project: Drools
          Issue Type: Bug
          Components: kie server
    Affects Versions: 7.31.0.Final
            Reporter: Karel Suta
            Assignee: Maciej Swiderski


Prometheus Kie server extensions contains support for custom metrics [1].
These metrics are added when a new container is called [2].
However when container is removed then these metrics stay active. Agenda event listener has container instance as a HashMap key. This container instance is quite big, causing memory leak.

[1] https://github.com/kiegroup/droolsjbpm-integration/blob/master/kie-server-parent/kie-server-services/kie-server-services-prometheus/src/main/java/org/kie/server/services/prometheus/PrometheusCustomMetricsSupport.java
[2] https://github.com/kiegroup/droolsjbpm-integration/blob/master/kie-server-parent/kie-server-services/kie-server-services-prometheus/src/main/java/org/kie/server/services/prometheus/PrometheusCustomMetricsSupport.java#L78-L94



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