[HBASE-4012] Further optimize byte comparison methods

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.92.0
• Fix Version/s: 0.92.0
• Component/s: util
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Todd Lipcon
• Created: 21/Jun/11 08:05
• Updated: 20/Nov/15 11:55
• Resolved: 05/Jul/11 19:48

Description

Guava uses some clever tricks with sun.misc.Unsafe to compare byte arrays about 100% faster than the naive byte-by-byte implementation: http://guava-libraries.googlecode.com/svn/trunk/guava/src/com/google/common/primitives/UnsignedBytes.java

We should borrow this [Apache 2 licensed] code.

Issue Links

• relates to: HADOOP-7761 Improve performance of raw comparisons