Running out of memory is something that happens frequently during a Maven build. Here is some sample output from running
mvn package:[INFO] Processing PDFs [INFO] Processing PDF: /Users/tom/Books/jenkins-the-definitive-guide-book/hudsonbook-pdf/src/main/resources/hudson-book-cover.pdf [INFO] Processing PDF: /Users/tom/Books/jenkins-the-definitive-guide-book/hudsonbook-pdf/target/book.pdf [ERROR] Java heap space -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/OutOfMemoryError mbp:jenkins-the-definitive-guide-book tom$
There is a big fat Java heap space error at the top of the error message.
To fix this, simply increase the available memory in the MAVEN_OPTS environment variable. In other words, before you run the
mvn package command, set or modify MAVEN_OPTS with the -Xmx... switch. The following code snippet shows how to do this in Linux/Unix and Windows. # Unix export MAVEN_OPTS="-Xmx512m -XX:MaxPermSize=128m" # Windows set MAVEN_OPTS=-Xmx512m -XX:MaxPermSize=128m
