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From "David Allsopp (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-2850) Converting bytes to hex string is unnecessarily slow
Date Sun, 03 Jul 2011 16:23:21 GMT
Converting bytes to hex string is unnecessarily slow

                 Key: CASSANDRA-2850
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
    Affects Versions: 0.8.1
            Reporter: David Allsopp
            Priority: Minor
             Fix For: 0.8.2

ByteBufferUtil.bytesToHex() is unnecessarily slow - it doesn't pre-size the StringBuilder
(so several re-sizes will be needed behind the scenes) and it makes quite a few method calls
per byte.

(OK, this may be a premature optimisation, but I couldn't resist, and it's a small change)

Will attach patch shortly that speeds it up by about x3, plus benchmarking test.

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