[CASSANDRA-2850] Converting bytes to hex string is unnecessarily slow

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.8.3
• Assignee: David Allsopp
• Reporter: David Allsopp

Authors

David Allsopp

Reviewers

Sylvain Lebresne

• Created: 03/Jul/11 16:22
• Updated: 16/Apr/19 09:32
• Resolved: 29/Jul/11 15:37

Description

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.