[PARQUET-295] Filter predicate should be able to filter on columns not specified in projection pushdown

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.6.0
• Component/s: parquet-mr
• Labels: filter2
• Assignee: Unassigned
• Reporter: Tim Chan
• Created: 30/May/15 03:38
• Updated: 23/Jun/24 03:27

Description

When using both filter predicate and projection pushdown of columns, the column specified in the filter predicate, should not have to be specified in the projection pushdown.

For example, if I want the first names of students that are over the age of 16, then I should be able to specify ParquetInputFormat.setFilterPredicate(jobConf, IntColumn("age") > 16) and only have to specify ThriftReadSupport.setProjectionPushdown(jobConf, "fname")