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  1. Drools
  2. DROOLS-6395

PrometheusMetricsDroolsListener is repeatedly added to the same ksession instance

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Details

    • Bug
    • Resolution: Done
    • Major
    • 7.56.0.Final
    • 7.55.0.Final
    • kie server
    • None
    • 2021 Week 22-24 (from May 31)
    • 2
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      1. Enable prometheus metrics

      <property name="org.kie.prometheus.server.ext.disabled" value="false"/>

      2. Call a stateless ksession with the same lookup id in kie-server multiple times.
      3. Capture a heap dump
      4. In the heap dump, look at StatelessKnowledgeSessionImpl.listeners. It contains multiple PrometheusMetricsDroolsListener instances.

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      1. Enable prometheus metrics <property name= "org.kie.prometheus.server.ext.disabled" value= "false" /> 2. Call a stateless ksession with the same lookup id in kie-server multiple times. 3. Capture a heap dump 4. In the heap dump, look at StatelessKnowledgeSessionImpl.listeners. It contains multiple PrometheusMetricsDroolsListener instances.
    • Undefined
    • NEW
    • NEW

    Description

      DroolsKieSessionLookupHandler repeatedly adds PrometheusMetricsDroolsListener to the same ksession instance. It will cause performance degrade especially for stateless ksession. Also metric count is not reliable.

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          Bug - A problem which impairs or prevents the functions of the product. RHPAM-3737 PrometheusMetricsDroolsListener is repeatedly added to the same ksession instance

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Verified

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              current Project key: DROOLS

              People

                rhn-support-tkobayas Toshiya Kobayashi
                rhn-support-tkobayas Toshiya Kobayashi
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                Dates

                  Created:
                  Updated:
                  Resolved: