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From 李家宏 <jh.li...@gmail.com>
Subject Re: Large binary payloads with storm
Date Sun, 12 Jan 2014 15:19:45 GMT
hi , Farchtchi,

which storm version are you using ?
IF the tuple is not serialized, then there is no need to use a JSON parser
to parse the received tuple. I guess so.

Regards


2014/1/11 Ruhollah Farchtchi <ruhollah.farchtchi@gmail.com>

> Yes I read that in the docs. However when receiving the byte array in
> storm.py it throws a json error when trying to parse the tuples. I didn't
> have time to look into it further as I am new to storm and python.
>
>
> On Saturday, January 11, 2014, 李家宏 wrote:
>
>> There is no need to serialize binary data, just send it as it.
>> As by defalut storm-0.9.0 use kryo serializer to serialize tuple values,
>> I guess we can skip this serialization step.
>>
>> Regards
>>
>>
>>
>> 2014/1/10 Jon Logan <jmlogan@buffalo.edu>
>>
>>> You're going to run into issues if you have large tuples, because they
>>> are buffered in memory. I would suggest moving it to an exterior channel,
>>> like Redis, etc, and only passing meta-data through Storm.
>>>
>>> Your other solution is to use quirky things like reflection to prevent
>>> your application from running out of memory when tuples are buffered.
>>>
>>>
>>> On Fri, Jan 10, 2014 at 8:49 AM, Ruhollah Farchtchi <
>>> ruhollah.farchtchi@gmail.com> wrote:
>>>
>>>> I am using storm to process small (< 100k) image files. I don't have a
>>>> real-time requirement as yet, but my bottle neck is more in the image
>>>> processing than message passing between bolts. I am using the Clojure DSL
>>>> and the python bolt. Everything I've put together right now is very much
a
>>>> prototype so my next steps are some further processing and integration.
>>>> Passing byte arrays didn't seem to work so well so I have had to
>>>> encode/decode into base64 binary as it seems the JSON parsers on the python
>>>> side didn't like byte arrays. I plan to go back and perhaps re-do the
>>>> integration with a native C++ bolt, however I believe that there are other
>>>> ways to do this integration as well. I'm As with Wilson, I'm interested if
>>>> anyone else is using Storm to process binary payloads and what they have
>>>> found works.
>>>>
>>>> Thanks,
>>>>
>>>> Ruhollah
>>>>
>>>> Ruhollah Farchtchi
>>>> ruhollah.farchtchi@gmail.com
>>>>
>>>>
>>>> On Thu, Jan 9, 2014 at 10:24 PM, Lochlainn Wilson <
>>>> lochlainn.wilson@gmail.com> wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> I am new to Storm and have been tasked with determining whether it is
>>>>> feasible for us to use Apache storm in my company. I have of course
>>>>> configured the sample projects and have been poking around. A red flag
is
>>>>> raised with the "stream processing" style JSON parsing.
>>>>>
>>>>> I am considering using storm with real time image processing bolts in
>>>>> C++. Packaging binary data into a JSON (by escaping it) looks like it
will
>>>>> be slow and expensive. Is there a better way? Does anyone have experience
>>>>> processing large streams of binary data through storm?
>>>>>
>>>>> How did it go?
>>>>>
>>>>> Regards,
>>>>>
>>>>> Lochlainn
>>>>>
>>>>
>>>>
>>>
>>
>>
>> --
>>
>> ======================================================
>>
>> Gvain
>>
>> Email: jh.li.em@gmail.com
>>
>
>
> --
> Ruhollah Farchtchi
> ruhollah.farchtchi@gmail.com
>



-- 

======================================================

Gvain

Email: jh.li.em@gmail.com

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