Maven Out of Memory Build Failure

Question

As of today, my maven compile fails.

[INFO] [ERROR] Unexpected
[INFO] java.lang.OutOfMemoryError: Java heap space
[INFO]  at java.util.Arrays.copyOfRange(Arr         


        

Answer 1

This happens in big projects on Windows when cygwin or other linux emulator is used(git bash). By some coincidence, both does not work on my project, what is an big open source project. In a sh script, a couple of mvn commands are called. The memory size grows to heap size bigger that specified in Xmx and most of the time in a case second windows process is started. This is making the memory consumption even higher.

The solution in this case is to use batch file and reduced Xmx size and then the maven operations are successful. If there is interest I can reveal more details.