MapReduce, mail # user - Time taken for launching Application Master

Time taken for launching Application Master

Krishna Kishore Bonagiri 2013-01-21, 06:34

Hi,
I am seeing that from the time ApplicationMaster is sumitted by my
Client to the ASM part of RM, it is taking around 7 seconds for AM to get
started. Is there a way to reduce that time, I mean to speed it up?

Thanks,
Kishore

Re: Time taken for launching Application Master

Rahul Jain 2013-01-21, 07:44

Check your node manager logs to understand the bottleneck first. When we
had a similar issue on recent version of hadoop, which includes fix for
MAPREDUCE-4068: we rearranged our job jar file to reduce time spent on
'expanding' the job jar file by the node manager(s).

-Rahul

On Sun, Jan 20, 2013 at 10:34 PM, Krishna Kishore Bonagiri <
[EMAIL PROTECTED]> wrote:

> Hi,
> I am seeing that from the time ApplicationMaster is sumitted by my
> Client to the ASM part of RM, it is taking around 7 seconds for AM to get
> started. Is there a way to reduce that time, I mean to speed it up?
>
> Thanks,
> Kishore
>