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From 李家宏 <jh.li...@gmail.com>
Subject Re: Large binary payloads with storm
Date Sat, 11 Jan 2014 13:46:06 GMT
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

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