Bjørnar Ruud created CAMEL-21854:
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             Summary: Possible memory leak when using camel-observability
                 Key: CAMEL-21854
                 URL: https://issues.apache.org/jira/browse/CAMEL-21854
             Project: Camel
          Issue Type: Bug
            Reporter: Bjørnar Ruud


 

After setting up Micrometer Observations with @CamelObservation on a 
spring-boot application the MicrometerObservationTracer handling of log 
statements in a route is problematic when log statements is not static.

If we use the ${body} in a log statement we create a new tracing metric for 
each unique body processed by the application.

A simple route like will create 10000 tracer metrics the application needs to 
keep in memory:
{code:java}
        from("timer:java?period=100")
            .setBody()
                .simple("${random(10000)}")
            .log("Lets create a lot of  metrics: ${body}"); {code}
 

The problem will be a lot worse if the body is always unique and of a 
significant size.

A example of the problem can be found 
[here|https://github.com/bjoraru/camel-observation-metrics-problem].

 



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