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From "Christian Spriegel (Commented) (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-1592) Apply regular expression to row keys
Date Tue, 22 Nov 2011 14:28:40 GMT


Christian Spriegel commented on CASSANDRA-1592:

Any chance that anybody came up with a solution for this in the meantime? 

We are facing the same problem here. So far our solution is to load lots of columns and then
do a regex on the column key in our application (Not on the row key!).

May I ask what the problem is with regex? Is it because of binary keys? Beside from that I
would say that regex is as universal as it can be.

Thanks in advance for any feedback, Ch
> Apply regular expression to row keys
> ------------------------------------
>                 Key: CASSANDRA-1592
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API
>    Affects Versions: 0.7 beta 2
>            Reporter: zhu han
>            Priority: Minor
>         Attachments: cassandra-0.6.5_key_regex.patch, cassandra-0.7.0-beta2_key_regex.patch
> Sometimes, the client needs to apply advanced filtering to row keys to carry out ad-hoc
queries.  Current implementation only supports prefix-match row filtering. This ticket is
to extend the get_range_slices() API to filter the row keys by regular expression. 
> It can also be extended to filter the column names by regex.

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