Nate McCall created CASSANDRA-5970:
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Summary: FilteredRangeSlice command for regex searches against
column names on known sets of keys
Key: CASSANDRA-5970
URL: https://issues.apache.org/jira/browse/CASSANDRA-5970
Project: Cassandra
Issue Type: New Feature
Components: Core
Reporter: Nate McCall
This is the ability to apply a regex against columns when the set of keys is
known. In filtering the keys, we would like to allow for the following clauses:
E, GTE, LTE, NE, inclusive list, exclusive list.
The end goal is to provide for efficient searching in the case where you have
some knowledge of the keys. A specific use case would be, say, searching user
agent strings in the given set of date buckets in the classic time-series web
log use case. This is a "sweet spot" for Cassandra and providing a more direct
method of access for such will help a lot of users.
Additionally, this will provide some level of feature parity with RDBMS crowd
who've had this feature for some time.
Internally, this will include the introduction of a new Verb, SSTableScanner
extension and an ExtendedFilter implementation which applies the regex as well
as a new method on StorageProxy.
This issue does not cover exposing this new query method to thrift and CQL, but
obviously that will be required for this to be of any practical use. Those
should be covered by separate issues.
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