Thanks for the hints. I got a better picture of how to deal with "count"
queries.
On Tue, Mar 25, 2014 at 7:01 PM, Robert Coli <rc...@eventbrite.com> wrote:
> On Tue, Mar 25, 2014 at 8:36 AM, shahab <shahab.mok...@gmail.com> wrote:
>
>> But after iteration 8, (i.e. inserting 1500000 sensor data), the
>> "select count(') ...) throws time-out exception and doesn't work anymore.
>> I even tried to execute "select count(*)..." using Datastax DevCenter GUI,
>> but I got same result.
>>
>
> All operations in Cassandra are subject to (various) timeouts, which by
> default are in the scale of single digit seconds.
>
> If you attempt to do an operation (such as aggregates across large numbers
> of large objects) which cannot complete in this time, this is a strong
> indication that either your overall approach is inappropriate or, at very
> least, that your buckets are too large.
>
> =Rob
>
>
