Below is a set of endpoints available on a Mesos agent. These endpoints are reachable at the address http://ip:port/endpoint.
For example, http://agent.com:5051/files/browse
files:
PS:
This endpoint reads data from a file at a given offset and for a given length. Query parameters:
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path=VALUE The path of directory to browse.
offset=VALUE Value added to base address to obtain a second address
length=VALUE Length of file to read.
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个人理解：length是此次阅读的最大行数。
offset是从stderr文件的第几行开始阅读
原文：http://www.cnblogs.com/zhangmingcheng/p/5800338.html