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问题描述
当我运行 maven 测试时，java.lang.OutOfMemoryError 发生.我在 google 上搜索了解决方案，并尝试 export MAVEN_OPTS=-Xmx1024m，但没有奏效.有人知道这个问题的其他解决方案吗?我正在使用 Maven 3.0
运行mvn test -e
解决方案
使用 MAVEN_OPTS 设置 Xmx 选项确实有效，它确实配置了用于启动 Maven 的 JVM.话虽如此，maven-surefire-plugin forks 默认情况下是一个新的 JVM，因此不会通过您的 MAVEN_OPTS.
要配置 maven-surefire-plugin 使用的 JVM 的大小，您必须:
在后一种情况下，是这样的:
<argLine>-Xmx1024m</argLine></配置>但是我不得不说我倾向于同意斯蒂芬的观点，你的一个测试很可能有问题，我不确定给予更多内存是正确的解决方案解决"(隐藏?)你的问题.
参考资料
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:CodeJavaworkspacedw.pig argetsurefire-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:CodeJavaworkspacedw.pig argetsurefire-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:CodeJavaworkspacedw.pig argetsurefire-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
解决方案
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
forkModetonever(which is be a not so good idea because Maven won't be isolated from the test) ~or~ - use the
argLineparameter (the right way):
In the later case, something like this:
<configuration>
<argLine>-Xmx1024m</argLine>
</configuration>
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
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