[HBASE-15432] TableInputFormat - support multi column family scan

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.98.16, 0.98.16.1, 2.0.0
• Fix Version/s: 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Xuesen Liang
• Reporter: nirav patel
• Created: 09/Mar/16 10:52
• Updated: 17/Dec/16 07:53
• Resolved: 17/Dec/16 02:38

Description

Currently Hbase TableInputFormat class has SCAN_COLUMN_FAMILY and SCAN_COLUMNS. SCAN_COLUMN_FAMILY can only scan single column family. If we need to scan multiple column families from a table then we must use SCAN_COLUMNS where we must provide both columns and column families which is not a convenient. Can we have a SCAN_COLUMN_FAMILIES which supports scan of multiple column families.