binlijin created HBASE-16658:

             Summary: Optimize UTF8 string/byte conversions
                 Key: HBASE-16658
             Project: HBase
          Issue Type: Improvement
            Reporter: binlijin
            Priority: Minor

String/byte conversions may take either a Charset instance or its canonical 
name. One might think a Charset instance would be faster due to avoiding a 
lookup and instantiation of a Charset, but it's not. The canonical string name 
variants will cache the string encoder/decoder (obtained from a Charset) 
resulting in better performance.
See HDFS-10662

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