Arthas: 文档上说不支持查看JUL锁阻塞的线程，冒昧的问一句，什么是JUL锁，谷歌也百度了不过没找到。。

[horo99]

[Hearen]

@horo99 Please check the English version: https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/en/thread.md#thread--b-locate-the-blocking-threads

@hengyunabc Would you please update the site? It's not updated quite long since I corrected some issues. Besides, why not using Travis-CI: https://github.com/alibaba/arthas/blob/master/.travis.yml to automate this stuff?

[horo99]

Thank you! @Hearen

[hengyunabc]

@horo99 @Hearen The page updated: https://alibaba.github.io/arthas/thread.html

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