[IMPALA-7644] Hide Parquet page index writing with feature flag

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 3.1.0
• Fix Version/s: Impala 3.1.0
• Component/s: Backend
• Labels: parquet performance
• Target Version: Impala 3.1.0
• Epic Color: ghx-label-7
• Assignee: Zoltán Borók-Nagy
• Reporter: Zoltán Borók-Nagy
• Created: 01/Oct/18 15:18
• Updated: 22/Oct/18 16:21
• Resolved: 18/Oct/18 12:19

Description

Currently there is no released Impala version that can write the Parquet page index:

https://github.com/apache/parquet-format/blob/master/PageIndex.md

However, the current Impala master writes the page index since IMPALA-5842, but cannot read it.

I think we should hide the write path with a feature flag until Impala is able to read it back and has better test coverage on it.