[CentOS] Tomcat does not end process.

> It does not close the process that is running the tomcat.
> Can any body please give me some idea; what is happening with the process.

I sometimes had similar issues with tomcat hanging by shutdown (but
with rather "exotic" deployments of Tomcat, not the standard one).

Installing the package 'tomcat-native' (from EPEL) usually solved
them, even if I could not really explain why.