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From Michael Segel <msegel_had...@hotmail.com>
Subject Re: Haeinsa: linear scalable multi-row transaction library for HBase
Date Thu, 10 Oct 2013 16:41:50 GMT
Which level of isolation do you support? 

On Oct 10, 2013, at 12:55 AM, Myungbo Kim <mbkim@vcnc.co.kr> wrote:

> Hello everyone in the mailing list.
> I want to introduce an open-source library Haeinsa which supports multi-row, multi-table
transaction on HBase.
> Haeinsa is client-only library that support serializability and linear scalability. 
> Here is the github repository and presentation that describes mechanism of it.
> github : https://github.com/VCNC/haeinsa
> presentation : https://speakerdeck.com/vcnc/haeinsa-overview  
> It was inspired by Google's percolator, but implementation detail is different.
> It use two-phase commit protocol and optimistic concurrency control to implement, and
Haeinsa now processes more than 300M+ transactions per day in single cluster without any consistency
problem for more than 2 month.  
> I know that there has been lots of libraries and papers for HBase transaction, but within
my knowledge, this is the only open-source library which support serializability and linear
> There is no theoretical limit of transaction throughput.
> It was tested against cluster on AWS until 40,000 transaction/sec. (Still testing on
bigger cluster) 
> If you find it interesting, please leave me comment. 
> Thanks,
> Andrew Kim

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