[HBASE-19203] Update Hadoop version used for build to 2.7.4

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Andrew Kyle Purtell
• Reporter: Andrew Kyle Purtell
• Created: 07/Nov/17 19:27
• Updated: 17/Jun/22 17:26
• Resolved: 07/Nov/17 23:31

Description

See parent.

2.5 is really old.

Based on discussions I've seen on the Hadoop *-dev@ lists, Hadoop is thinking about maintaining 2.8 and up, not 2.7. Using 2.7 for convenience binary builds is fine. We should probably update it to 2.8.2, but that's not strictly necessary so I'll opt for the oldest.