Maven import in Intellij IDEA runs out of memory on a large project

The solution is to set -Xmx1g (or more) in Maven VM options for importer (yes, it is a separate option!). Go to “Settings/Preferences -> Build Tools -> Maven -> Importing”, and find the option there.

Maven importing settings

Read more on JVM heap size: (Q) What are the Xms and Xmx parameters when starting JVMs?.

Leave a Comment