[HADOOP-11072] better Logging in DNS.java

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.3.0, 2.4.0
• Component/s: net
• Labels: logging
• Assignee: Unassigned
• Reporter: jay vyas
• Created: 06/Sep/14 01:20
• Updated: 09/Oct/22 21:42

Description

The DNS.java class should be more informative, and possibly fail early when reverse DNS is broken. Right now it is vulnerable to a cryptic ArrayIndex exception.

parts = hostIp.getHostAddress(....)
String reverseIp = parts[3] + parts[2] ... 

During this patch I think we can also improve a couple other minor logging statements in the net package.