hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Adarsh Sharma <adarsh.sha...@orkash.com>
Subject Re: Hadoop in Real time applications
Date Fri, 18 Feb 2011 03:57:07 GMT
I think Facebook, Uses Hadoop, Casandra for their Analytics Purposes.


Thanks, Adarsh



Michael Segel wrote:
> Uhm... 
>
> 'Realtime' is relative.
>
> Facebook uses HBase for e-mail, right? Now isn't that a 'realtime' application?
> ;-)
>
> If you're talking about realtime as in like a controller? Or a systems of record for
a stock exchange? That wouldn't be a good fit.
>
>
>   
>> Date: Thu, 17 Feb 2011 17:26:04 +0530
>> Subject: Re: Hadoop in Real time applications
>> From: karthik84kumar@gmail.com
>> To: common-user@hadoop.apache.org
>>
>> Hi,
>>
>> Thanks for the clarification.
>>
>> On Thu, Feb 17, 2011 at 2:09 PM, Niels Basjes <Niels@basjes.nl> wrote:
>>
>>     
>>> 2011/2/17 Karthik Kumar <karthik84kumar@gmail.com>:
>>>       
>>>> Can Hadoop be used for Real time Applications such as banking
>>>>         
>>> solutions...
>>>
>>> Hadoop consists of several components.
>>> Components like HDFS and HBase are quite suitable for "interactive"
>>> solutions (as in: I usually get an answer within 0.x seconds).
>>> If you really need "realtime" (as in: I want a guarantee that I have
>>> an answer within 0.x seconds) the answer is: No, HDFS/HBase cannot
>>> guarantee that.
>>> Other components like MapReduce (and Hive which run on top of
>>> MapReduce) are purely batch oriented.
>>>
>>> --
>>> Met vriendelijke groeten,
>>>
>>> Niels Basjes
>>>
>>>       
>>
>> -- 
>> With Regards,
>> Karthik
>>     
>  		 	   		  
>   


Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message