[HIVE-12635] Hive should return the latest hbase cell timestamp as the row timestamp value

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0
• Fix Version/s: 2.1.0
• Component/s: HBase Handler
• Labels: backward-incompatible
• Hadoop Flags: Incompatible change
• Release Note: After this change, the timestamp of the row will be the latest timestamp of all the cells in hbase for that row, instead of the timestamp of the first cell.
• Assignee: Aihua Xu
• Reporter: Aihua Xu
• Created: 09/Dec/15 20:20
• Updated: 21/Jun/16 15:52
• Resolved: 21/Dec/15 21:52

Description

When hive talks to hbase and maps hbase timestamp field to one hive column, seems hive returns the first cell timestamp instead of the latest one as the timestamp value.

Makes sense to return the latest timestamp since adding the latest cell can be considered an update to the row.