Why secondary indexes are recommended for only attributes with low cardinality and they are not very useful for high cardinality values?
It does, but this is an implementation detail subject to change (e.g.,
the bitmap indexes being added do not).
On Mon, Mar 7, 2011 at 10:55 AM, Alvin UW <firstname.lastname@example.org> wrote:
> Does Cassandra store secondary index with an extra CF?
> 2011/3/7 Jonathan Ellis <email@example.com>
>> Yes, this is guaranteed the same way single-row updates are guaranteed
>> to be atomic (the commitlog).
>> On Mon, Mar 7, 2011 at 10:13 AM, Alvin UW <firstname.lastname@example.org> wrote:
>> > Hello,
>> > I was wondering whether Secondary Index is consistent with its base
>> > table?
>> > How did you guarantee the consistency?
>> > Thanks
>> > Alvin
>> Jonathan Ellis
>> Project Chair, Apache Cassandra
>> co-founder of DataStax, the source for professional Cassandra support
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support