我有一个java项目,需要10秒钟后关闭maven做它的事情。即使做一个简单的mvn清理需要超过10秒。它似乎只是悬挂。maven完成后奇怪的减速
$ time mvn clean
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for io.inbot:inbot-java:jar:1.0
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 35, column 21
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-surefire-plugin is missing. @ line 45, column 12
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-jar-plugin is missing. @ line 31, column 21
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-javadoc-plugin is missing. @ line 144, column 21
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building inbot-java 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ inbot-java ---
[INFO] Deleting /Users/jilles/git/linko/inbot-java/target
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.373 s
[INFO] Finished at: 2015-08-20T12:42:13+02:00
[INFO] Final Memory: 24M/1963M
[INFO] ------------------------------------------------------------------------
[1]+ Done mvn clean
real 0m12.603s
user 0m14.689s
sys 0m0.303s
我试图发送一个kill -QUIT的过程中看到它实际上是做什么,但它似乎不再能够在它挂起时间转储堆栈跟踪。这意味着可能有一些关闭挂钩或终结仍在运行,但vm不再响应。
我使用这个Maven版本:
mvn --version
Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T13:57:37+02:00)
Maven home: /usr/local/maven
Java version: 1.8.0_31, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.10.4", arch: "x86_64", family: "mac"
在这种环境
JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home
MAVEN_OPTS='-Xms2048M -Xmx2048M'
完整的命令行通过PS -h
24547 ttys000 0:05.57 /Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/bin/java -Xms2048M -Xmx2048M -classpath /usr/local/maven/boot/plexus-classworlds-2.5.2.jar -Dclassworlds.conf=/usr/local/maven/bin/m2.conf -Dmaven.home=/usr/local/maven -Dmaven.multiModuleProjectDirectory=/Users/jilles/git/linko/inbot-java org.codehaus.plexus.classworlds.launcher.Launcher clean
我很想知道报道发生了什么,甚至更好的解决方法。
编辑:找到根本原因:ch.raffael.doclets.pegdown.PegdownDoclet;看到下面的答案
你可以试试这个离线查看Maven是否挂在一个HTTP请求出于任何原因吗? – cahen
添加-o似乎没有解决问题 –