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From Shahab Yunus <shahab.yu...@gmail.com>
Subject Re: Help on Cassandra Limitaions
Date Fri, 06 Sep 2013 12:50:06 GMT
Also, Sylvain, you have couple of great posts about relationships between
CQL3/Thrift entities and naming issues:

http://www.datastax.com/dev/blog/cql3-for-cassandra-experts
http://www.datastax.com/dev/blog/thrift-to-cql3

I always refer to them when I get confuse :)

Regards,
Shahab


On Fri, Sep 6, 2013 at 3:04 AM, Hannu Kröger <hkroger@gmail.com> wrote:

> Hi,
>
> Well, that was a word to word quotation. :)
>
> Anyways, I think what you just said is a better explanation than those two
> previous ones. I hope it ends up on the wiki page because what it says
> there now is causing confusion, no matter how correct it technically is :)
>
> Cheers,
> Hannu
>
>
> 2013/9/6 Sylvain Lebresne <sylvain@datastax.com>
>
>> Well, I don't know if that's what Patrick replied but that's not correct.
>> The wording *is* correct, though it does uses CQL3 terms.
>> For CQL3, the term "partition" is used to describe all the (CQL) rows
>> that share the same partition key (If you don't know what the latter is:
>> http://cassandra.apache.org/doc/cql3/CQL.html).
>> So it says that all the rows sharing a particular partition key
>> multiplied by their number of effective columns is capped at 2 billions.
>>
>> In the thrift terminology, this means a 'thrift row' (not to be confused
>> with a CQL3 row) cannot have more that 2 billions thrift columns'.
>>
>> --
>> Sylvain
>>
>>
>> On Fri, Sep 6, 2013 at 7:55 AM, Hannu Kröger <hkroger@gmail.com> wrote:
>>
>>> I asked the same thing earlier and this is what patrick mcfadin replied:
>>> "It's not worded well. Essentially it's saying there is a 2B limit on a
>>> row. It should be worded a 'CQL row'"
>>>
>>> I hope helps.
>>>
>>> Cheers,
>>> Hannu
>>>
>>> On 6.9.2013, at 8.20, J Ramesh Kumar <rameshj1977@gmail.com> wrote:
>>>
>>> Hi,
>>>
>>> http://wiki.apache.org/cassandra/CassandraLimitations
>>>
>>> In the above link, I found the below limitation,
>>>
>>> "The maximum number of cells (rows x columns) in a single partition is 2
>>> billion.".
>>>
>>> Here what does "partition" mean ? Is it node (or) column family (or)
>>> anything else ?
>>>
>>> Thanks,
>>> Ramesh
>>>
>>>
>>
>

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