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From ayan guha <guha.a...@gmail.com>
Subject Re: [TorrentBroadcast] Pyspark Application terminated saying "Failed to get broadcast_1_ piece0 of broadcast_1 in Spark 2.0.0"
Date Fri, 30 Dec 2016 12:44:36 GMT
@Palash: I think what Macro meant by "reduce functionality" is to reduce
scope of your application's functionality so that you can isolate the issue
in certain part(s) of the app...I do not think he meant "reduce" operation
:)

On Fri, Dec 30, 2016 at 9:26 PM, Palash Gupta <
spline_palash@yahoo.com.invalid> wrote:

> Hi Marco,
>
> All of your suggestions are highly appreciated, whatever you said so far.
> I would apply to implement in my code and let you know.
>
> Let me answer your query:
>
> What does your program do?
> Palash>> In each hour I am loading many CSV files and then I'm making some
> KPI(s) out of them. Finally I am doing some aggregation and inserting into
> mongodb from spark.
>
> you say it runs for 2-3 hours, what is the logic? just processing a huge
> amount of data? doing ML ?
> Palash>> Yes you are right whatever I'm processing it should not take much
> time. Initially my processing was taking only 5 minutes as I was using all
> cores running only one application. When I created more separate spark
> applications for handling delayed data loading and implementing more use
> cases with parallel run, I started facing the error randomly. And due to
> separate resource distribution among four parallel spark application to run
> in parallel now some task is taking longer time than usual. But still it
> should not take 2-3 hours time...
>
> Currently whole applications are running in a development environment
> where we have only two VM cluster and I will migrate to production platform
> by next week. I will let you know if there is any improvement over there.
>
> I'd say break down your application..  reduce functionality , run and see
> outcome. then add more functionality, run and see again.
>
> Palash>> Macro as I'm not very good in Spark. It would be helpful for me
> if you provide some example of reduce functionality. Cause I'm using Spark
> data frame, join data frames, use SQL statement to manipulate KPI(s). Here
> How could I apply reduce functionality?
>
>
>
> Thanks & Best Regards,
> Palash Gupta
>
>
> ------------------------------
> *From:* Marco Mistroni <mmistroni@gmail.com>
> *To:* "spline_palash@yahoo.com" <spline_palash@yahoo.com>
> *Cc:* User <user@spark.apache.org>
> *Sent:* Thursday, December 29, 2016 11:28 PM
>
> *Subject:* Re: [TorrentBroadcast] Pyspark Application terminated saying
> "Failed to get broadcast_1_ piece0 of broadcast_1 in Spark 2.0.0"
>
> Hello
>  no sorry i dont have any further insight into that.... i have seen
> similar errors but for completely different issues, and in most of hte
> cases it had to do with my data or my processing rather than Spark itself.
> What does your program do? you say it runs for 2-3 hours, what is the
> logic? just processing a huge amount of data?
> doing ML ?
> i'd say break down your application..  reduce functionality , run and see
> outcome. then add more functionality, run and see again.
> I found myself doing htese kinds of things when i got errors in my spark
> apps.
>
> To get a concrete help you will have to trim down the code to a few lines
> that can reproduces the error  That will be a great start
>
> Sorry for not being of much help
>
> hth
>  marco
>
>
>
>
>
> On Thu, Dec 29, 2016 at 12:00 PM, Palash Gupta <spline_palash@yahoo.com>
> wrote:
>
> Hi Marco,
>
> Thanks for your response.
>
> Yes I tested it before & am able to load from linux filesystem and it also
> sometimes have similar issue.
>
> However in both cases (either from hadoop or linux file system), this
> error comes in some specific scenario as per my observations:
>
> 1. When two parallel spark separate application is initiated from one
> driver (not all the time, sometime)
> 2. If one spark jobs are running for more than expected hour let say 2-3
> hours, the second application terminated giving the error.
>
> To debug the problem for me it will be good if you can share some possible
> reasons why failed to broadcast error may come.
>
> Or if you need more logs I can share.
>
> Thanks again Spark User Group.
>
> Best Regards
> Palash Gupta
>
>
>
> Sent from Yahoo Mail on Android
> <https://overview.mail.yahoo.com/mobile/?.src=Android>
>
> On Thu, 29 Dec, 2016 at 2:57 pm, Marco Mistroni
> <mmistroni@gmail.com> wrote:
> Hi
>  Pls try to read a CSV from filesystem instead of hadoop. If you can read
> it successfully then your hadoop file is the issue and you can start
> debugging from there.
> Hth
>
> On 29 Dec 2016 6:26 am, "Palash Gupta" <spline_palash@yahoo.com. invalid>
> wrote:
>
> Hi Apache Spark User team,
>
>
>
> Greetings!
>
> I started developing an application using Apache Hadoop and Spark using
> python. My pyspark application randomly terminated saying "Failed to get
> broadcast_1*" and I have been searching for suggestion and support in
> Stakeoverflow at Failed to get broadcast_1_piece0 of broadcast_1 in
> pyspark application
> <http://stackoverflow.com/questions/41236661/failed-to-get-broadcast-1-piece0-of-broadcast-1-in-pyspark-application>
>
>
> Failed to get broadcast_1_piece0 of broadcast_1 in pyspark application
> I was building an application on Apache Spark 2.00 with Python 3.4 and
> trying to load some CSV files from HDFS (...
>
> <http://stackoverflow.com/questions/41236661/failed-to-get-broadcast-1-piece0-of-broadcast-1-in-pyspark-application>
>
>
> Could you please provide suggestion registering myself in Apache User list
> or how can I get suggestion or support to debug the problem I am facing?
>
> Your response will be highly appreciated.
>
>
>
> Thanks & Best Regards,
> Engr. Palash Gupta
> WhatsApp/Viber: +8801817181502
> Skype: palash2494
>
>
>
>
>
>


-- 
Best Regards,
Ayan Guha

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