java hidden.edu.emory.mathcs.backport*
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hidden.edu.emory.mathcs.backport*
提问by valodzka
In application thread dump I can see threadpool with five threads like following:
在应用程序线程转储中，我可以看到具有五个线程的线程池，如下所示：
"pool-1-thread-5" prio=10 tid=0x000000000101a000 nid=0xe1f in Object.wait() [0x00007f3c66086000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000007b8e57af8> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at java.lang.Object.wait(Object.java:503)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
- locked <0x00000007b8e57af8> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
at java.lang.Thread.run(Thread.java:722)
But I don't use nothing like this directly and don't see anything like this in dependencies.
但是我不直接使用这样的东西，也没有在依赖项中看到这样的东西。
What is this (hidden.edu.emory.mathcs.backport) and why it used (application running on jdk 7)? Can I detect what part of application starting it?
这是什么（hidden.edu.emory.mathcs.backport）以及为什么使用它（在jdk 7上运行的应用程序）？我可以检测启动它的应用程序的哪一部分吗？
回答by pingw33n
This edu.emory.mathcs.backportpackage tree belongs to backport-util-concurrentwhich is a backport of java.util.concurrentto the older Java versions. The hiddenprefix might have been added by tools like maven-shade-plugin.
此edu.emory.mathcs.backport包树属于backport-util-concurrent，它是java.util.concurrent旧 Java 版本的反向移植。该hidden前缀可能已经被类似的工具添加maven-shade-plugin。
If you're using Maven you can search for this dependency with:
如果您使用的是 Maven，则可以使用以下命令搜索此依赖项：
mvn dependency:tree -Dincludes=backport-util-concurrent:backport-util-concurrent
