[HBASE-3335] Add BitComparator for filtering

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.92.0
• Component/s: Client
• Hadoop Flags: Reviewed
• Tags: filters, comparators
• Assignee: Unassigned
• Reporter: Nathaniel Cook
• Created: 10/Dec/10 23:37
• Updated: 20/Nov/15 12:42
• Resolved: 20/Dec/10 17:31

Description

There are many uses cases for setting bits flags and being able filter on those seems like a good idea.

The BitComparator would take a byte[] and a bitwise operator for its constructor. It would perform the bitwise operation on the column value bytes with the specified byte[]. Then return whether the result was non-zero.

Only the CompareOp.EQUAL and CompareOp.NOT_EQUAL would make sense with this comparator.

The binary bitwise operators that apply are AND, OR, and XOR.

Issue Links

• is related to: HBASE-5204 Backward compatibility fixes for 0.92