out of mempry for large number of tests. using maven and sonar

Question

i am using sonar 2.6 and on running the command:

mvn site cobertura:cobertura

i am getting the following error...

Tests run: 1397, Failures: 10, Errors: 117, Skipped: 0

Flushing results...
Flushing results done
Exception in thread "Thread-0" java.lang.OutOfMemoryError: Java heap space
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974
)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
753)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
    at java.util.ArrayList.readObject(ArrayList.java:593)
    at sun.reflect.GeneratedMethodAccessor33.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974
)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
753)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:19
47)
    at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:48
0)
    at net.sourceforge.cobertura.coveragedata.LineData.readObject(LineData.j
ava:525)
    at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974
)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
753)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
    at java.util.HashMap.readObject(HashMap.java:1030)
    at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974
)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)

    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
753)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
[ERROR] There are test failures.

My machine has win-XP with 32 bit environment and 3.2gb RAM. PS i have already set the env variaable MAVEN_OPTS to 512M. As i am not able to set it to any higher value coz then i get

Unable to load JVM error.

Answer 1

There are a few properties to look at. In addition to cobertura.maxmen (per Raghuram's pointer above, look at the configuration for the surefire plugin. Make sure that forkMode is not never - but experiment.

Note in the description of the jvm property that "JVM settings are not inherited from MAVEN_OPTS." Try setting your memory options there, instead.