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how to list all rows in one column family, using Astyanax here

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Started 3 months ago by mwang168
Latest reply from juha.poutiainen
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mwang168
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Hi, kind of newbie to Cassandra. Using Astynax here. I have a CF which are using Composite Key (id and updateDate). Try to page through all rows (in millions) to dump its content, how do I do it in Astyanax?

Coming from RDBMS world, find a lot of restriction of this Non-SQLDB. Also have some other questions:

1. is there a way to range query on row key (id)? How do I do it?
2. Is composite key better than secondary index? I just want to have range query on updateDate?

THanks.

Posted 3 months ago #
juha.poutiainen
Member

Hi,

1. you need ordered partitioner
(http://www.datastax.com/docs/1.0/cluster_architecture/partitioning)

2. composite key and secondary index is not necessarily the same thing. Check at least chapter "Clustering, compound keys, and more" (http://www.datastax.com/dev/blog/schema-in-cassandra-1-1)

Posted 3 months ago #

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