[HIVE-17611] Add new LazyBinary SerDe for faster writes

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Serializers/Deserializers
• Assignee: Jason Dere
• Reporter: Jason Dere
• Created: 26/Sep/17 21:01
• Updated: 22/May/18 23:15
• Resolved: 27/Sep/17 23:54

Description

LazyBinarySerDe.serialize() ends up making getCategory()/getPrimitiveCategory() calls for every column of every row. Tried some simple tests to eliminate these calls for the non-vectorized version, this looks like it speeds up the writes by ~3x.
Adding a LazyBinarySerDe2 class with this new implementation.

Issue Links

• links to: https://reviews.apache.org/r/62596/