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Posted to user@zookeeper.apache.org by Kay Kay <ka...@gmail.com> on 2010/02/19 03:07:18 UTC
Zab documentation ?
I am trying to figure out more information about Zab and came across the
wiki here -
http://wiki.apache.org/hadoop/ZooKeeper/Zab .
Can you help add more information about the same / documentation
available as appropriate .
Re: Zab documentation ?
Posted by Raúl Gutiérrez Segalés <rg...@itevenworks.net>.
Hi,
On 20 February 2014 02:08, Abu-Aisheh <ze...@gmail.com> wrote:
> Good morning,
>
> Could anyone of you provide me with a simple java code that uses the Zab
> protocol of Zookeeper? I have been searching about that but I did not
> succeed to find a code that shows how can I use Zab.
>
There are papers by Patrick (Hunt) and Flavio (P. Junquiera) out there for
the theory and I'd say ZK's source under:
src/java/main/org/apache/zookeeper/server/quorum/{Leader.java,
Learner.java, LearnerHandler.java}
would be a good start. I don't know of a standalone ZAB library or
implementation (though that would be fun).
In fact what I need is simple, I have a MapReduce code and I want all the
> mappers to update a variable (let's say X) whenever they succeed to find a
> better value (i.e. a bigger value). In this case, the leader has to
> broadcast the actual best value to all mappers. How can I do such a thing
> in
> Java?
>
I am guessing it has to be in process and using ZK to store this
variables/state isn't an option?
Cheers,
-rgs
Re: Zab documentation ?
Posted by nileader <ni...@gmail.com>.
Here is the zab documentation on stanford website.
http://www.stanford.edu/class/cs347/reading/zab.pdf
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2014-02-20 18:08 GMT+08:00 Abu-Aisheh <ze...@gmail.com>:
> Good morning,
>
> Could anyone of you provide me with a simple java code that uses the Zab
> protocol of Zookeeper? I have been searching about that but I did not
> succeed to find a code that shows how can I use Zab.
>
> In fact what I need is simple, I have a MapReduce code and I want all the
> mappers to update a variable (let's say X) whenever they succeed to find a
> better value (i.e. a bigger value). In this case, the leader has to
> broadcast the actual best value to all mappers. How can I do such a thing
> in
> Java?
>
> Any answer will be appreciated,
> Regards,
> Abu-Aisheh
>
>
>
> --
> View this message in context:
> http://zookeeper-user.578899.n2.nabble.com/Zab-documentation-tp4595654p7579593.html
> Sent from the zookeeper-user mailing list archive at Nabble.com.
>
Re: Zab documentation ?
Posted by Abu-Aisheh <ze...@gmail.com>.
Good morning,
Could anyone of you provide me with a simple java code that uses the Zab
protocol of Zookeeper? I have been searching about that but I did not
succeed to find a code that shows how can I use Zab.
In fact what I need is simple, I have a MapReduce code and I want all the
mappers to update a variable (let's say X) whenever they succeed to find a
better value (i.e. a bigger value). In this case, the leader has to
broadcast the actual best value to all mappers. How can I do such a thing in
Java?
Any answer will be appreciated,
Regards,
Abu-Aisheh
--
View this message in context: http://zookeeper-user.578899.n2.nabble.com/Zab-documentation-tp4595654p7579593.html
Sent from the zookeeper-user mailing list archive at Nabble.com.
Re: Zab documentation ?
Posted by Patrick Hunt <ph...@apache.org>.
Ah, good idea, I put it up on the Zab page, thanks.
http://wiki.apache.org/hadoop/ZooKeeper/Zab
Patrick
Sudipto Das wrote:
> I found this paper a bit more detailed, and helpful.
>
> *A simple totally ordered broadcast protocol
> http://portal.acm.org/citation.cfm?id=1529978
> *
> Best Regards
> Sudipto Das
>
> PhD Candidate
> CS @ UCSB
> Santa Barbara, CA 93106, USA
> http://www.cs.ucsb.edu/~sudipto
>
>
> On Fri, Feb 19, 2010 at 9:08 AM, Patrick Hunt <ph...@apache.org> wrote:
>
>> Mahadev can you put a link to that up on the wiki?
>>
>> Patrick
>>
>>
>> Mahadev Konar wrote:
>>
>>> Hi Kay,
>>> There is a paper "Brief Announcement Zab A Practical Totally Ordered
>>> Broadcast Protocol." in
>>> DISC 2009
>>>
>>> By ben and flavio which has the details of zab in it.
>>>
>>> Thanks
>>> mahadev
>>>
>>>
>>> On 2/18/10 6:07 PM, "Kay Kay" <ka...@gmail.com> wrote:
>>>
>>> I am trying to figure out more information about Zab and came across the
>>>> wiki here -
>>>>
>>>> http://wiki.apache.org/hadoop/ZooKeeper/Zab .
>>>>
>>>> Can you help add more information about the same / documentation
>>>> available as appropriate .
>>>>
>>>>
>
Re: Zab documentation ?
Posted by Sudipto Das <su...@gmail.com>.
I found this paper a bit more detailed, and helpful.
*A simple totally ordered broadcast protocol
http://portal.acm.org/citation.cfm?id=1529978
*
Best Regards
Sudipto Das
PhD Candidate
CS @ UCSB
Santa Barbara, CA 93106, USA
http://www.cs.ucsb.edu/~sudipto
On Fri, Feb 19, 2010 at 9:08 AM, Patrick Hunt <ph...@apache.org> wrote:
> Mahadev can you put a link to that up on the wiki?
>
> Patrick
>
>
> Mahadev Konar wrote:
>
>> Hi Kay,
>> There is a paper "Brief Announcement Zab A Practical Totally Ordered
>> Broadcast Protocol." in
>> DISC 2009
>>
>> By ben and flavio which has the details of zab in it.
>>
>> Thanks
>> mahadev
>>
>>
>> On 2/18/10 6:07 PM, "Kay Kay" <ka...@gmail.com> wrote:
>>
>> I am trying to figure out more information about Zab and came across the
>>> wiki here -
>>>
>>> http://wiki.apache.org/hadoop/ZooKeeper/Zab .
>>>
>>> Can you help add more information about the same / documentation
>>> available as appropriate .
>>>
>>>
>>
Re: Zab documentation ?
Posted by Patrick Hunt <ph...@apache.org>.
Mahadev can you put a link to that up on the wiki?
Patrick
Mahadev Konar wrote:
> Hi Kay,
> There is a paper
> "Brief Announcement Zab A Practical Totally Ordered Broadcast Protocol." in
> DISC 2009
>
> By ben and flavio which has the details of zab in it.
>
> Thanks
> mahadev
>
>
> On 2/18/10 6:07 PM, "Kay Kay" <ka...@gmail.com> wrote:
>
>> I am trying to figure out more information about Zab and came across the
>> wiki here -
>>
>> http://wiki.apache.org/hadoop/ZooKeeper/Zab .
>>
>> Can you help add more information about the same / documentation
>> available as appropriate .
>>
>
Re: Zab documentation ?
Posted by Mahadev Konar <ma...@yahoo-inc.com>.
Hi Kay,
There is a paper
"Brief Announcement Zab A Practical Totally Ordered Broadcast Protocol." in
DISC 2009
By ben and flavio which has the details of zab in it.
Thanks
mahadev
On 2/18/10 6:07 PM, "Kay Kay" <ka...@gmail.com> wrote:
> I am trying to figure out more information about Zab and came across the
> wiki here -
>
> http://wiki.apache.org/hadoop/ZooKeeper/Zab .
>
> Can you help add more information about the same / documentation
> available as appropriate .
>