OutOfMemoryError when compiling my android app with gradle

Question

I'm trying to build my app via gradle and I'm currently having this issue after running a ./gradlew build:

:myApp:compileDebug


The system is out of resources.
Consult the following stack trace for details.
java.lang.OutOfMemoryError: Java heap space
    at com.sun.tools.javac.util.Position$LineMapImpl.build(Position.java:139)
    at com.sun.tools.javac.util.Position.makeLineMap(Position.java:63)
    at com.sun.tools.javadoc.DocCommentScanner.getLineMap(DocCommentScanner.java:438)
    at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:512)
    at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:550)
    at com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:804)
    at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:727)
    at com.sun.tools.javac.main.Main.compile(Main.java:353)
    at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:115)
    at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:40)
    at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:33)
    at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:95)
    at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:48)
    at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:34)
    at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:29)
    at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:20)
    at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:33)
    at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:24)
    at org.gradle.api.tasks.compile.Compile.compile(Compile.java:68)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1047)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:877)
    at org.gradle.api.internal.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:216)
    at org.gradle.api.internal.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:122)
    at org.gradle.api.internal.CompositeDynamicObject.invokeMethod(CompositeDynamicObject.java:147)
    at org.gradle.api.tasks.compile.JavaCompile_Decorated.invokeMethod(Unknown Source)
    at groovy.lang.GroovyObject$invokeMethod.call(Unknown Source)
:myApp:compileDebug FAILED

Any idea?

Solution 1

I think I fixed it. I got the solution from this post. i.e:

replacing in gradlew:

GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""

by

GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\" \"-Xmx1024m\" \"-Xms256m\" \"-XX:MaxPermSize=1024m\""

Solution 2

In my project there was a gradle.properties file with these lines:

# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx10248m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8

I uncommented the last line, and that worked.

Solution 3

I also faced this problem on regular java project. Our test execution was extensive and used to run out of memory or permgen error.

So there are two soluton 1. Set the parameters and the run the build

export JAVA_OPTS="-Xmx1024M -XX:MaxPermSize=512M -XX:ReservedCodeCacheSize=512M" 
export GRADLE_OPTS="-Dorg.gradle.daemon=true"

Second option simplifies the solution within in gradle file

test {
    jvmArgs "-XX:MaxPermSize=256m"
}

I recommend second option as its permanent fix.

Solution 4

dexOptions {

        incremental true

       //javaMaxHeapSize=1024M for 32bit Java,2048M for 64bit Java

       javaMaxHeapSize "1024M"

       //javaMaxHeapSize "2048M"
    }

Solution 5

FWIW, I reproduced the "The system is out of resources" error (but with another stacktrace) by hardcoding a ridiculously large string into a source file.

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