curl -i -X PUT "http://SomeHostname:50070/webhdfs/v1/file1?op=CREATE"
HTTP/1.1 307 TEMPORARY_REDIRECT
Content-Type: application/octet-stream
Location: http://sslave0:50075/webhdfs/v1/file1?op=CREATE&overwrite=false
Content-Length: 0
Server: Jetty(6.1.26)
这里它为datanode返回sslave0,对我来说似乎是一个内部地址