[HIVE-10642] Update Timestamp type mapping to Parquet

• Type: Sub-task
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Assignee: Dong Chen
• Reporter: Dong Chen
• Created: 07/May/15 07:16
• Updated: 13/May/15 22:06

Description

Timestamp in Hive was originally mapped to INT_96 in Parquet before. And inside Parquet it use Binary to save values.

When working on HIVE-10255, I found predicate with timestamp does not work, since comparing Binary representative of Timestamp value can not give correct relationship.
Meanwhile, in latest version Parquet, the timestamp is mapped to INT_64. Refer to https://github.com/Parquet/parquet-format/blob/master/LogicalTypes.md

Therefore, this Jira will update the mapping of Timestamp type in Hive, and keep it backward compatible.

Issue Links

• blocks: HIVE-10255 Parquet PPD support TIMESTAMP
• duplicates: HIVE-10054 Clean up ETypeConverter since Parquet supports timestamp type already