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From Rahul Ravindran <rahu...@yahoo.com>
Subject Re: Using HBase for Deduping
Date Thu, 14 Feb 2013 20:29:56 GMT
Most will be in the same hour. Some will be across 3-6 hours. 

Sent from my phone.Excuse the terseness.

On Feb 14, 2013, at 12:19 PM, Viral Bajaria <viral.bajaria@gmail.com> wrote:

> Are all these dupe events expected to be within the same hour or they
> can happen over multiple hours ?
> Viral
> From: Rahul Ravindran
> Sent: 2/14/2013 11:41 AM
> To: user@hbase.apache.org
> Subject: Using HBase for Deduping
> Hi,
>    We have events which are delivered into our HDFS cluster which may
> be duplicated. Each event has a UUID and we were hoping to leverage
> HBase to dedupe them. We run a MapReduce job which would perform a
> lookup for each UUID on HBase and then emit the event only if the UUID
> was absent and would also insert into the HBase table(This is
> simplistic, I am missing out details to make this more resilient to
> failures). My concern is that doing a Read+Write for every event in MR
> would be slow (We expect around 1 Billion events every hour). Does
> anyone use Hbase for a similar use case or is there a different
> approach to achieving the same end result. Any information, comments
> would be great.
> Thanks,
> ~Rahul.

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