[CASSANDRA-4613] Utilise Secondary Indexes in ColumnFamilyRecordReader

• Type: New Feature
• Status: Resolved
• Priority: Normal
• Resolution: Duplicate
• Component/s: Feature/2i Index
• Assignee: Sam Tunnicliffe
• Reporter: Sam Tunnicliffe

Authors

Sam Tunnicliffe

• Created: 04/Sep/12 19:04
• Updated: 16/Apr/19 09:32
• Resolved: 04/Sep/12 21:05

Description

Enable an IndexClause to be passed to ColumnFamilyRecordReader by serializing it and adding to the Hadoop job Configuration. This is a requirement for enabling Filter Pushdown[1] in Hive which can vastly reduce the number of scanned rows that need to be processed in the Hive layer.

[1] https://cwiki.apache.org/Hive/filterpushdowndev.html