Memory leak (groovy)

[Сергей Баранов]

Hi all,

I have a problem with memory leaks on our Jenkins ver. 2.39 (Pipeline groovy plugin ver. 2.23). 

We have a lot of pipeline jobs, jenkins server crushes 1-2 times a week and we can't find the reason.

I'v created the heap dump and I see a lot of arrays without values 

https://i.gyazo.com/fed8f8e9fbd752ad460bda1174f68911.png

https://i.gyazo.com/a980b213e6ebfe586c9f0d3ff9a91b84.png

How can I detect the cause of this problem?

Thanks in advance.

[Сергей Баранов]

I'v tried to analyze heap dump as described here https://wiki.jenkins-ci.org/display/JENKINS/I'm+getting+OutOfMemoryError

this     - value: groovy.lang.GroovyClassLoader #45007

 <- delegate     - class: groovy.lang.GroovyClassLoader$InnerLoader, value: groovy.lang.GroovyClassLoader #45007

  <- <classLoader>     - class: Script1, value: groovy.lang.GroovyClassLoader$InnerLoader #45095

   <- klazz     - class: org.codehaus.groovy.reflection.ClassInfo, value: Script1 class Script1

    <- value     - class: org.codehaus.groovy.reflection.GroovyClassValuePreJava7$EntryWithValue, value: org.codehaus.groovy.reflection.ClassInfo #45981

     <- [1]     - class: java.lang.Object[], value: org.codehaus.groovy.reflection.GroovyClassValuePreJava7$EntryWithValue #45980

      <- [7055]     - class: java.lang.Object[], value: java.lang.Object[] #98508

       <- table     - class: org.codehaus.groovy.reflection.GroovyClassValuePreJava7$GroovyClassValuePreJava7Segment, value: java.lang.Object[] #79578

        <- [2]     - class: org.codehaus.groovy.util.AbstractConcurrentMapBase$Segment[], value: org.codehaus.groovy.reflection.GroovyClassValuePreJava7$GroovyClassValuePreJava7Segment #14

         <- segments     - class: org.codehaus.groovy.reflection.GroovyClassValuePreJava7$GroovyClassValuePreJava7Map, value: org.codehaus.groovy.util.AbstractConcurrentMapBase$Segment[] #2

          <- map     - class: org.codehaus.groovy.reflection.GroovyClassValuePreJava7, value: org.codehaus.groovy.reflection.GroovyClassValuePreJava7$GroovyClassValuePreJava7Map #1

           <- globalClassValue     - class: org.codehaus.groovy.reflection.ClassInfo, value: org.codehaus.groovy.reflection.GroovyClassValuePreJava7 #1

            <- [3662]     - class: java.lang.Object[], value: org.codehaus.groovy.reflection.ClassInfo class ClassInfo

             <- elementData     - class: java.util.Vector, value: java.lang.Object[] #162921

              <- classes (Java frame)     - class: org.eclipse.jetty.webapp.WebAppClassLoader, value: java.util.Vector #39670

пятница, 6 января 2017 г., 13:17:58 UTC+3 пользователь Сергей Баранов написал:

[Sam K]

Is the 'groovy sandbox' checked for all jobs?  If you've allowed groovy code to be executed outside of the sandbox, its possible one of the pipelines is using a non-white-listed groovy command that is bringing down Jenkins server.  Just talking from my personal experience.  

[Сергей Баранов]

Thanks for your reply. 

I'v checked this, and found that all our workflow jobs uses SCM, as I know, in this mode 'groovy sandbox' enabled with no options.

вторник, 10 января 2017 г., 22:01:50 UTC+3 пользователь Sam K написал:

[Daniel Beck]

Given that there's ClassInfo in there, could this be https://issues.jenkins-ci.org/browse/JENKINS-33358 ?

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