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From Billie Rinaldi <>
Subject Re: Jobs view .. how to hook into it....
Date Mon, 20 Jan 2014 15:40:04 GMT
In Hadoop 1 only, there is a log4j appender on the JobTracker/JobHistory
that inserts the data into postgres (or whichever db you have configured).
The code is in contrib/ambari-log4j.


On Fri, Jan 17, 2014 at 1:59 PM, Aaron Cody <> wrote:

> hello
> I’m looking at integrating my own process into the Ambari ‘Jobs’ view …
> and I can see how the web side of things works .. i.e. the view makes REST
> calls to the server which in turn results in a query to postgres to get the
> job stats … but what is not so clear is how those job/task stats get into
> postgres in the first place….
> Q: for example, with MapReduce .. is Hadoop/JobTracker somehow inserting
> the job/task info into postgres directly? Or is there some other mechanism
> in Ambari that is listening for map reduce jobs/tasks to start/finish?
> any hints on where to look in the source tree would be greatly appreciated

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