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From Naganarasimha Garla <naganarasimha...@apache.org>
Subject Re: YARN - level/depth of monitoring info - newbie question
Date Wed, 26 Jul 2017 00:01:31 GMT
Hi Rajila,
              One option you can think of is using custom "counters" and
have a logic to increment them when ever you insert or have any custom
logic. These counters can be got from the MR interfaces and even in the web
ui even after the job has finished.

+ Naga

On Tue, Jul 25, 2017 at 7:12 PM, Sunil Govind <sunil.govind@gmail.com>

> Hi Rajila,
> From YARN side, you will be able to get detailed information about the
> application. And that application could be MapReduce or anything. But in
> side that mapreduce app, what kind of operation is done, its specific to
> that application (here its mapreduce).
> YARN could only be able to give you time/memory/cpu usage w.r.t app or
> atmost at node level.
> Thanks
> Sunil
> On Tue, Jul 25, 2017 at 3:46 AM rajila2008 . <rajila.usav@gmail.com>
> wrote:
>> Hi all,
>> Does YARN provide application level info ?!
>> For example : there is a map-reduce job persisting its outcome in a NoSql
>> datastore by executing an INSERT command.
>> Can YARN provide the execution time for the INSERT ?  without the
>> application itself is not logging the info anywhere.
>> There's some argument at workplace , Dev team asking prod-support to find
>> such info thru YARN logs.
>> I believe "YARN's resource reporting"  is similar to "unix top" command,
>> but at cluster level .   "top" give system level info , not how many
>> INSERTs a job executed.
>> Similarly YARN will not give application specific info like the number of
>> INSERT op OR record count OR array size with a job ,  the application needs
>> to log such info as needed.
>> Could anyone please clarify if my understanding correct ?!
>> Regards,
>> Rajila

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