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From Sylvain Lebresne <sylv...@datastax.com>
Subject Re: Help on Cassandra Limitaions
Date Fri, 06 Sep 2013 06:39:50 GMT
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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