禁用Maven中特定插件的并行构建

Question

我使用maven和-T选项构建了我的项目。有时，由于随机的校验样式错误，构建失败。

是否可以禁用特定插件的-T选项(校验样式)并并行阻止该插件的执行？

以防万一附加堆栈痕迹：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check (validate) on project yyy-1: Execution validate of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check (validate) on project yyy-1: Execution validate of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
    ...
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:185)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    ...
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution validate of goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 11 more
Caused by: java.lang.NullPointerException
    at com.puppycrawl.tools.checkstyle.checks.javadoc.AbstractJavadocCheck.visitToken(AbstractJavadocCheck.java:182)
    ...
    at com.puppycrawl.tools.checkstyle.Checker.process(Checker.java:265)
    at org.apache.maven.plugin.checkstyle.exec.DefaultCheckstyleExecutor.executeCheckstyle(DefaultCheckstyleExecutor.java:252)
    at org.apache.maven.plugin.checkstyle.CheckstyleViolationCheckMojo.execute(CheckstyleViolationCheckMojo.java:538)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    ... 12 more

或

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check (validate) on project xxx-2: You have 1 Checkstyle violation. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check (validate) on project xxx-2: You have 1 Checkstyle violation.
    ...
    at org.apache.maven.lifecycle.internal.builder.multithreaded.MultiThreadedBuilder$1.call(MultiThreadedBuilder.java:185)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    ...
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.maven.plugin.MojoFailureException: You have 1 Checkstyle violation.
    at org.apache.maven.plugin.checkstyle.CheckstyleViolationCheckMojo.execute(CheckstyleViolationCheckMojo.java:588)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 11 more

Answer 1

版本6.11之前的Checkstyle甚至连简单的线程安全都没有。Javadoc检查使用的是在单个JVM中执行Check样式的所有执行过程中共享的静态缓存。

从6.11版开始，我已经将静态缓存替换为线程本地缓存，它同样快速，但提供了基本的线程安全。它使得在Maven和Check样式中使用-T选项成为可能。