incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Shahryar Sedghi <shsed...@gmail.com>
Subject Re: Prepare is 100 to 200 times slower after migration to 1.2.11
Date Wed, 27 Nov 2013 15:04:36 GMT
Thanks Mikhail.

I switched to 2.0.3 and the problem is still there, I will open an issue
with a test case on it. I have not tested 1.2.12, but I assume that will
have the same problem.

Shahryar


On Mon, Nov 25, 2013 at 5:57 PM, Shahryar Sedghi <shsedghi@gmail.com> wrote:

> I did some test and apparently the prepared statement is not cached at
> all, in a loop (native protocol, datastax java driver, both 1.3 and 4.0)  I
> prepared the same statement  20 times and the elapsed time where almost
> identical. I think it has something to do with CASSANDRA-6107 that was
> implemented in 1.2.11 and 2.0.2, I did the same test with 2.0.2 and got the
> same result. is there a setting for CQL3 prepared cahe that I have missed
> in 1.2.11?
>
> Thanks
>
>
> On Mon, Nov 25, 2013 at 1:02 PM, Shahryar Sedghi <shsedghi@gmail.com>wrote:
>
>>
>> Hi
>>
>> I have migrated my DEV environment from 1.2.8 to 1.2.11 to finally move
>> to 2.0.2,  and prepare is 100 to 200 times slower, something that was sub
>> millisecond  now is 150 ms. Other CQL operations are normal.
>>
>> I am nor planning to move to 2,0.2 until I fix this. I do  not see any
>> warn or error in the log, the only thing I saw was live ratio around 6.
>>
>> Please help.
>>
>> Thanks
>>
>>  Shahryar
>>
>> --
>>
>>
>
>
> --
> Life has no meaning a priori … It is up to you to give it a meaning, and
> value is nothing but the meaning that you choose ~ Jean-Paul Sartre
>



-- 
Life has no meaning a priori … It is up to you to give it a meaning, and
value is nothing but the meaning that you choose ~ Jean-Paul Sartre

Mime
View raw message