We want to use cassandra to store complex data. But we can't figure out, how to
organize indexes.
Our table (column family) looks like this:
Users = { RandomId int, Firstname varchar, Lastname varchar, Age int, Country
int, ChildCount int }
In our queries we have mandatory fields (Firstname,Lastname,Age) and extra
search options (Country,ChildCount). How do we organize index to make this kind
of queries fast?
First I thought, it would be natural to make composite index on
(Firstname,Lastname,Age) and add separate secondary index on remaining fields
(Country and ChildCount). But I can't insert rows into table after creating
secondary indexes. And also, I can't query the table.
I'm using cassandra 1.1.0, and cqlsh with --cql3 option.
Any other suggestions to solve our problem (complex queries with mandatory and
additional options) are welcome.The main point is, how can we join data in
cassandra. If I make few index column families, I need to intersect the values,
to get rows that pass all search criteria??? Or should I use something based on
Hadoop (Pig,Hive) to make such queries?
Respectfully, Nury
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