Runtime exec pauses half way through execution

Question

I'm running a Java (.jar) program from a bat script that near the end has the following (on windows)

Runtime.getRuntime().exec("svn co http://myrepository.com/someproj");
Thread.sleep(20000);

It checks out about 1/10th of the directories and 1 file and then it does nothing. I suspect the reason it is pausing on the file but I couldn't find anything. The bat script is run as an administrator.

Answer 1

exec命令阻塞的一个常见原因是它要么等待父进程（或控制台）的输入，要么阻塞，因为父进程没有读取子进程标准输出或错误流。