Alex Baranau created HBASE-6509: ----------------------------------- Summary: Implement fast-forwarding FuzzyRowFilter to allow filter rows e.g. by "???alex?b" Key: HBASE-6509 URL: https://issues.apache.org/jira/browse/HBASE-6509 Project: HBase Issue Type: New Feature Components: filters Reporter: Alex Baranau Assignee: Alex Baranau Priority: Minor
Implement fuzzy row key filter to allow fetching records e.g. by this criteria: "???alex?b". This seems to be very useful as an alternative to select records by row keys by specifying their part which is not prefix part. Due to fast-forwarding nature of the filter in many situations this helps to avoid heavy full-table scans. This is especially effective when you have composite row key and (some of) its parts has fixed length. E.g. with the key of format userId_actionId_time, given that userId and actionId length is fixed, one can select user actions of specific type using fuzzy row key by specifying mask "????_myaction". Given fast-forwarding nature of filter, this will usually work much faster than doing whole table scan with any of the existing server-side filters. In many cases this can work as secondary-indexing alternative. Many times users implement it as a custom filter and many times they just don' know this is possible. Let's add it to the common codebase. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira