akka.event.logging.$.. objects filling up heap

[AL]

Hi ,

I am analyzing my heap dump after suffering from a crash. it seems that akka.event.logging.$.. filling up the heap (see attached images).

My actors are extends ActorLogging.  and we are using logback.

my configuration:

akka {

  loglevel = "DEBUG"

  loggers = ["akka.event.slf4j.Slf4jLogger"]

  log-dead-letters = 10

}

logback.xml:

<configuration">

 <jmxConfigurator />

    <conversionRule conversionWord="coloredLevel" converterClass="com.foo.logging.ColoredLevel"/>

    <property name="COLORED_LEVEL_PATTERN" value="%coloredLevel [%d{ISO8601}] %c: %m%n%rEx" />

    <property name="NON_COLORED_LEVEL_PATTERN" value="%-5level [%d{ISO8601}] %c: %m%n%rEx" />

    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">

        <target>System.out</target>

        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">

            <layout class="com.foo.logging.fooLayout">

                <pattern>${COLORED_LEVEL_PATTERN}</pattern>

            </layout>

        </encoder>

    </appender>

    <appender name="MAIN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

        <file>tmp/foo.log</file>

        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">

            <fileNamePattern>tmp/foo.log.%i.gz</fileNamePattern>

            <minIndex>1</minIndex>

            <maxIndex>10</maxIndex>

        </rollingPolicy>

        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">

            <maxFileSize>100MB</maxFileSize>

        </triggeringPolicy>

        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">

            <layout class="com.foo.logging.fooLayout">

                <pattern>${NON_COLORED_LEVEL_PATTERN}</pattern>

            </layout>

        </encoder>

    </appender>

    <logger name="akka.actor" level="INFO"/>

    <logger name="org.springframework" level="WARN"/>

    <logger name="org.glassfish" level="WARN"/>

    <root level="INFO">

        <appender-ref ref="MAIN_FILE"/>

        <appender-ref ref="CONSOLE"/>

    </root>

</configuration>

What can I do other then remove some logs ? 

* I did saw this answer from 2013, but how can I limit the ActorLogging mailbox ?

Thank you for helping

[Patrik Nordwall]

Doesn't the first picture indicate that you create many actors that are never stopped?

By the way, you should also set 

logging-filter = "akka.event.slf4j.Slf4jLoggingFilter"

see http://doc.akka.io/docs/akka/2.4.17/java/logging.html#SLF4J

/Patrik

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Lightbend -  Reactive apps on the JVM
Twitter: @patriknw

[AL]

Thank Patric,

I will check that . but looking at the 2nd image, doesn't seems strange all those akka.event.logging$Info2/Debug2 objects ? 

and yes, definitely missed that logger . 

Thanks

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[Patrik Nordwall]

I don't know, one have to drill down and find what is holding on to the instances.

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