[HDFS-9350] Avoid creating temprorary strings in Block.toString() and getBlockName()

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.7.1
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: performance
• Target Version/s: 2.8.0
• Assignee: Staffan Friberg
• Reporter: Staffan Friberg
• Created: 30/Oct/15 21:14
• Updated: 02/Oct/19 17:14
• Resolved: 18/Dec/15 18:05

Description

Minor change to use StringBuilders directly to avoid creating temporary strings of Long and Block name when doing toString on a Block.

Issue Links

• breaks: HDFS-9947 Block#toString should not output information from derived classes