java lang OutOfMemoryError Java heap space in Maven

Question

When I run maven test  java lang OutOfMemoryError happens  I googled it for solutions and have tried to export MAVEN OPTS -Xmx1024m  but it did not work  Anyone know other solutions for this problem  I am using maven 3 0 Paste the error message here when run mvn test -e  Failed tests    warning junit framework TestSuite 1    testDefaultPigJob 1 com snda dw pig impl DefaultPigJobLocalTest    testDefaultPigJob 2 com snda dw pig impl DefaultPigJobLocalTest   Tests run  11  Failures  3  Errors  0  Skipped  0  10 11 01 13 37 18 INFO executionengine HExecutionEngine  Connecting to hadoop fi le system at  file      INFO  ------------------------------------------------------------------------  INFO  BUILD FAILURE  INFO  ------------------------------------------------------------------------  INFO  Total time  30 063s  INFO  Finished at  Mon Nov 01 13 37 18 PDT 2010  INFO  Final Memory  3M 6M  INFO  ------------------------------------------------------------------------  ERROR  Failed to execute goal org apache maven plugins maven-surefire-plugin 2  5 test  default-test  on project dw pig  There are test failures   ERROR   ERROR  Please refer to E  Code Java workspace dw pig target surefire-reports fo r the individual test results   ERROR  -   Help 1  org apache maven lifecycle LifecycleExecutionException  Failed to execute goal o rg apache maven plugins maven-surefire-plugin 2 5 test  default-test  on project  dw pig  There are test failures   Please refer to E  Code Java workspace dw pig target surefire-reports for the in dividual test results          at org apache maven lifecycle internal MojoExecutor execute MojoExecutor  java 199          at org apache maven lifecycle internal MojoExecutor execute MojoExecutor  java 148          at org apache maven lifecycle internal MojoExecutor execute MojoExecutor  java 140          at org apache maven lifecycle internal LifecycleModuleBuilder buildProje ct LifecycleModuleBuilder java 84          at org apache maven lifecycle internal LifecycleModuleBuilder buildProje ct LifecycleModuleBuilder java 59          at org apache maven lifecycle internal LifecycleStarter singleThreadedBu ild LifecycleStarter java 183          at org apache maven lifecycle internal LifecycleStarter execute Lifecycl eStarter java 161          at org apache maven DefaultMaven doExecute DefaultMaven java 314          at org apache maven DefaultMaven execute DefaultMaven java 151          at org apache maven cli MavenCli execute MavenCli java 445          at org apache maven cli MavenCli doMain MavenCli java 168          at org apache maven cli MavenCli main MavenCli java 132          at sun reflect NativeMethodAccessorImpl invoke0 Native Method          at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl  java 39          at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAcces sorImpl java 25          at java lang reflect Method invoke Method java 597          at org codehaus plexus classworlds launcher Launcher launchEnhanced Laun cher java 290          at org codehaus plexus classworlds launcher Launcher launch Launcher jav a 230          at org codehaus plexus classworlds launcher Launcher mainWithExitCode La uncher java 409          at org codehaus plexus classworlds launcher Launcher main Launcher java  352  Caused by  org apache maven plugin MojoFailureException  There are test failures    Please refer to E  Code Java workspace dw pig target surefire-reports for the in dividual test results          at org apache maven plugin surefire SurefirePlugin execute SurefirePlugi n java 629          at org apache maven plugin DefaultBuildPluginManager executeMojo Default BuildPluginManager java 107          at org apache maven lifecycle internal MojoExecutor execute MojoExecutor  java 195              19 more  ERROR   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 rea d the following articles   ERROR   Help 1  http   cwiki apache org confluence display MAVEN MojoFailureExc

User · Accepted Answer

When I run maven test  java lang OutOfMemoryError happens  I google it for solutions and have tried to export MAVEN OPTS -Xmx1024m  but it did not work     Setting the Xmx options using MAVEN OPTS does work  it does configure the JVM used to start Maven  That being said  the maven-surefire-plugin forks a new JVM by default  and your MAVEN OPTS are thus not passed   To configure the sizing of the JVM used by the maven-surefire-plugin  you would either have to     change the forkMode to never  which is be a not so good idea because Maven won t be isolated from the test   or   use the argLine parameter  the right way     In the later case  something like this    lt configuration gt     lt argLine gt -Xmx1024m lt  argLine gt   lt  configuration gt    But I have to say that I tend to agree with Stephen here  there is very likely something wrong with one of your test and I m not sure that giving more memory is the right solution to  solve   hide   your problem   References   Maven 2 Surefire Plugin  Classloading and Forking in Maven Surefire

User · Answer

For those new to Maven  like me  here is the whole config that goes in the build section of your pom  Cheers     lt build gt       lt plugins gt         lt plugin gt           lt groupId gt org apache maven plugins lt  groupId gt           lt artifactId gt maven-surefire-plugin lt  artifactId gt           lt version gt 2 19 lt  version gt           lt configuration gt               lt argLine gt -Xmx1024m lt  argLine gt           lt  configuration gt         lt  plugin gt       lt  plugins gt     lt  build gt

User · Answer

To temporarily work around this problem  I found the following to be the quickest way   export JAVA TOOL OPTIONS  -Xmx1024m -Xms1024m

User · Answer

I have solved this problem on my side by 2 ways    Adding this configuration in pom xml   lt configuration gt  lt argLine gt -Xmx1024m lt  argLine gt  lt  configuration gt   Switch to used JDK 1 7 instead of 1 6

User · Answer

Not only heap memory  also increase perm size  to resolve that exception in maven use these variables in environment variable   variable name  MAVEN OPTS variable value  -Xmx512m -XX MaxPermSize 256m   Example      export MAVEN OPTS  -Xmx512m -XX MaxPermSize 500m

User · Answer

In order to resolve java lang OutOfMemoryError  Java heap space in Maven  try to configure below configuration in pom   lt plugin gt     lt groupId gt org apache maven plugins lt  groupId gt     lt artifactId gt maven-surefire-plugin lt  artifactId gt     lt version gt   maven-surefire-plugin version  lt  version gt        lt configuration gt           lt verbose gt true lt  verbose gt           lt fork gt true lt  fork gt           lt argLine gt -XX MaxPermSize 500M lt  argLine gt       lt  configuration gt   lt  plugin gt

User · Answer

The chances are that the problem is in one of the unit tests that you ve asked Maven to run   As such  fiddling with the heap size is the wrong approach   Instead  you should be looking at the unit test that has caused the OOME  and trying to figure out if it is the fault of the unit test or the code that it is testing   Start by looking at the stack trace   If there isn t one  run mvn     test again with the -e option

[java] java.lang.OutOfMemoryError: Java heap space in Maven

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