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From Anshi Shrivastava <anshi.shrivast...@exadatum.com>
Subject Re: Spark UI Source Code
Date Wed, 09 May 2018 04:53:40 GMT
Hi Marcelo, Dev,

Thanks for your response.
I have used SparkListeners to fetch the metrics (the public REST API uses
the same) but to monitor these metrics over time, I have to persist them
(using KVStore library of spark).  Is there a way to fetch data from this
KVStore (which uses levelDb for storage) and filter it on basis on
timestamp?

Thanks,
Anshi

On Mon, May 7, 2018 at 9:51 PM, Marcelo Vanzin [via Apache Spark User List]
<ml+s1001560n32114h29@n3.nabble.com> wrote:

> On Mon, May 7, 2018 at 1:44 AM, Anshi Shrivastava
> <[hidden email] <http:///user/SendEmail.jtp?type=node&node=32114&i=0>>
> wrote:
> > I've found a KVStore wrapper which stores all the metrics in a LevelDb
> > store. This KVStore wrapper is available as a spark-dependency but we
> cannot
> > access the metrics directly from spark since they are all private.
>
> I'm not sure what it is you're trying to do exactly, but there's a
> public REST API that exposes all the data Spark keeps about
> applications. There's also a programmatic status tracker
> (SparkContext.statusTracker) that's easier to use from within the
> running Spark app, but has a lot less info.
>
> > Can we use this store to store our own metrics?
>
> No.
>
> > Also can we retrieve these metrics based on timestamp?
>
> Only if the REST API has that feature, don't remember off the top of my
> head.
>
>
> --
> Marcelo
>
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