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From Jonathan Ellis <>
Subject Re: Cassandra vs HBase
Date Tue, 08 Dec 2009 06:13:37 GMT
hop is to traditional hadoop what something like truviso is to
postgresql.  in other words, hop is still poorly suited for the sorts
of things people would use cassandra for.

On Tue, Dec 8, 2009 at 12:07 AM, Ian Holsman <> wrote:
> This is slightly off-topic
> There is a recent project called hadoop online (hop) on google-code that
> promises a online/continuous query ability on top of hadoop which should
> allow for near real time activities instead of the batch stuff that mapred
> does
> ---
> Sent from my phone
> Ian Holsman - 703 879-3128
> On 06/12/2009, at 3:12 PM, Joseph Bowman <> wrote:
> When I wrote my Why Cassandra article, I didn't get into the why I didn't
> choose x platform because I didn't want to start a flame war by doing
> comparisons. For HBase, the primary reason I didn't choose it is that while
> there were benchmarks of what it could theoretically do, there wasn't any
> real real world deployments proving it. My experience as a systems
> administrator is that it's best to go with a product that's been proven over
> time in real world scenarios.
> I'll add to this though, that nothing nosql, even Cassandra, has reached the
> point where I feel it's no-brainer to choose it over anything, including sql
> based solutions like mysql and oracle. It really comes down to your
> requirements.
> On Sat, Dec 5, 2009 at 11:04 PM, Matt Revelle <> wrote:
>> On Dec 5, 2009, at 21:45, Joe Stump <> wrote:
>>> On Dec 5, 2009, at 7:41 PM, Bill Hastings wrote:
>>>> [Is] HBase used for real timish applications and if so any ideas what
>>>> the largest deployment is.
>>> I don't know of anyone off the top of my head who's using anything built
>>> on top of Hadoop for a real-time environment. Hadoop just wasn't built for
>>> that. It was built, like MapReduce, for crunching absurd amounts of data
>>> across hundreds of nodes in a "reasonable" amount of time.
>>> Just my $0.02.
>>> --Joe
>> While Hadoop MapReduce isn't meant for realtime use, HBase can handle it.
>> Over last summer there were some benchmarks included in HBase/Hadoop
>> presentations that showed, IIRC, performance comparable to Cassandra.

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