jenkins deploy plugin. out of memory

Question

I use Jenkins with deploy plugin, maven3 and tomcat7. Previously all worked fine, but new .war with new libraries cause OutOfMemoryError (java heap size) exception during deploying .

Note: building was successfully

This issue caused only if I use jenkins. If I try to deploy .war file (that was placed in /tomcat/webapps by jenkins) manually directly from tomcat manager - all works fine. Or if I restart tomcat and .war will be auto deployed - all works fine.

I increased the java heap memory for tomcat in /etc/default/tomcat7 and issue was fixed, but in my opinion it's bad solution. Why OutOfMemory happens using jenkins?

Thanks

Answer 1

Jenkins gets an OutOfMemoryException when the Maven job you're running is out of memory. Every Maven buildstep in a Jenkins job will be run separately, so every step can have it's own settings. To fix this issue, you can assign more memory to a specific Maven build step.

When a build contains a "Invoke a top-level Maven targets" buildstep there is the option to ajust the JVM options (this can be found after clicking the advanced button). When assigning more memory (for instance -Xmx1024m -Xms256m -XX:MaxPermSize=1024m) the specified buildstep will less likely run out of memory. If it still does, you should play with the numbers.

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