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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: [SPAM] Re: slow insertion rate with secondary index
Date Mon, 06 Jun 2011 12:43:47 GMT
If the rows you are updating are not cached, yes.  (Otherwise maybe 10% slower.)

On Mon, Jun 6, 2011 at 7:29 AM, David Boxenhorn <david@citypath.com> wrote:
> Jonathan, are Donal Zang's results (10x slowdown) typical?
>
> On Mon, Jun 6, 2011 at 3:14 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>
>> On Mon, Jun 6, 2011 at 6:28 AM, Donal Zang <zangds@ihep.ac.cn> wrote:
>> > Another thing I noticed is : if you first do insertion, and then build
>> > the
>> > secondary index use "update column family ...", and then do select based
>> > on
>> > the index, the result is not right (seems the index is still being built
>> > though the "update" commands returns quickly).
>>
>> That is correct. "describe keyspace" from the cli tells you when an
>> index has finished building.
>>
>> --
>> Jonathan Ellis
>> Project Chair, Apache Cassandra
>> co-founder of DataStax, the source for professional Cassandra support
>> http://www.datastax.com
>
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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