Hi Long,
1. You can make it with a hardcore way: parsing the log file of job
tracker to get the information about `task id` and hostname of its node.
2. This is a sample code to get IP Address from hostname using InetAddress:
|java.net.InetAddress inetAdd =
java.net.InetAddress.getByName("www.google.com");
String ipAdress = inetAdd.|getHostAddress()
Just for out of curiosity, what is your purpose of getting *location* of
map task when running a MapReduce job?
Long Van Nguyen Dinh wrote:
Thanks Amogh. For my application, I want each map task reports to me
where it's running. However, I have no idea how to use Java
Inetaddress APIs to get that info. Could you explain more?
Van
On Wed, Oct 14, 2009 at 2:16 PM, Amogh Vasekar <am...@yahoo-inc.com> wrote:
For starters look at any monitoring tool like vaidya, hadoop UI ( ganglia too,
haven't read much on it though ). Not sure if you need this for debugging
purposes or for some other real-time app.. You should be able to get info on
localhost of each of your map tasks in a pretty straightforward way using Java
Inetaddress APIs( and use that info for search?)
Thanks,
Amogh
On 10/15/09 12:11 AM, "Long Van Nguyen Dinh" <munt...@gmail.com> wrote:
Hello again,
Could you give me any hint to start with? I have no idea how to get
that information.
Many thanks,
Van
On Tue, Oct 13, 2009 at 9:22 PM, Long Van Nguyen Dinh <munt...@gmail.com> wrote:
Hi all,
Given a map task, I need to know the IP address of the machine where
that task is running. Is there any existing method to get that
information?
Thank you,
Van
