Maven Jetty Plugin OutOfMemoryError When Sharing Instance Between Two Web Apps

java maven jetty

12,867

Solution 1

Add following jvm argument, if you get error regarding cannot allocate memory then try using lesser value (128 and 256)

-XX:PermSize=256M -XX:MaxPermSize=512M

Reference

Solution 2

Try running Jetty in forked mode like this:

<plugin>
    <groupId>org.mortbay.jetty</groupId>
    <artifactId>jetty-maven-plugin</artifactId>
    <version>7.6.8.v20121106</version>
    <executions>
        <execution>
          <id>start-jetty</id>
          <!-- Set this to the appropriate phase:
               pre-integration-test, or earlier test-compile-->
          <phase>pre-integration-test</phase>
          <goals>
             <goal>run-forked</goal>
          </goals>
       </execution>
    </executions>

    <configuration>
        <jvmArgs>-Xmx2048m -Xms1536m -XX:PermSize=128m -XX:MaxPermSize=256m</jvmArgs>
        <scanIntervalSeconds>10</scanIntervalSeconds>
        <webApp>
            <contextPath>/</contextPath>
        </webApp>
        <contextHandlers>           
            <contextHandler implementation="org.eclipse.jetty.webapp.WebAppContext">
                 <war>../../api/target/main-api.war</war>
                <contextPath>/test</contextPath>
            </contextHandler>
        </contextHandlers> 
    </configuration>
</plugin>

For more details check Running Jetty in a forked JVM.

And... Make sure you really have 2048 MB of free RAM before starting this.

Solution 3

Try using Plumbr to diagnose any memory leak issues with both your web apps. http://plumbr.eu/

12,867

c12

Updated on September 16, 2022

Comments

c12 over 1 year

I'm using the maven jetty plugin to run my two web applications. One web application is spring mvc UI and the other is a RESTful web application. I able to get the two web applications to communicate when I run two separate mvn jetty:run instances and assign different ports. I have successfully deploy both in the same jetty instance using the same port using the below maven pom.xml configuration. I eventually get a ava.lang.OutOfMemoryError: PermGen space error. What is the best workaround for this?

<plugin>
    <groupId>org.mortbay.jetty</groupId>
    <artifactId>jetty-maven-plugin</artifactId>
    <version>7.6.8.v20121106</version>
    <configuration>
        <jvmArgs>-Xmx2024m -Xms2024m</jvmArgs>
        <scanIntervalSeconds>10</scanIntervalSeconds>
        <webApp>
            <contextPath>/</contextPath>
        </webApp>
        <contextHandlers>           
            <contextHandler implementation="org.eclipse.jetty.webapp.WebAppContext">
                <war>../../api/target/main-api.war</war>
                <contextPath>/test</contextPath>
            </contextHandler>
        </contextHandlers> 
    </configuration>
</plugin>

c12 over 10 years

I tried your suggestion and even increased it to <jvmArgs>-XX:PermSize=512M -XX:MaxPermSize=1024M</jvmArgs> but I still get a java.lang.OutOfMemoryError: PermGen space. Also, I can't cntrl + c the jetty server and have to kill the process when I have the configuration like I listed above. Is it common to run two jetty instances (one per web app) from one maven pom.xml?
Snehal Patel over 10 years

i am not aware about <jvmArgs> parameter for maven plugin, will you please try setting memory related parameter in MAVEN_OPTS environment variable, e.g. on windows set MAVEN_OPTS=-Xms1024m -Xmx1024m -XX:PermSize=256M -XX:MaxPermSize=512M and then execute mvn
Stephane over 8 years

The goal should be run-forked instead of jetty:run-forked