[HADOOP-5823] Handling javac "deprecated" warning for using UTF8

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.20.0
• Fix Version/s: 0.21.0
• Component/s: build
• Hadoop Flags: Reviewed
• Assignee: Raghu Angadi
• Reporter: Raghu Angadi
• Created: 13/May/09 21:35
• Updated: 24/Aug/10 20:37
• Resolved: 14/May/09 00:02

Description

o.a.h.io.UTF8 is deprecated but is still used in multiple places. FSEditLog.java has 40 UTF8 related warnings. I don't think it is feasible to avoid using UTF8 in FSEditLog.java.

Two options to get rid of these warnings :
1. use @SupressWarnings at each use of UTF or for enclosing class.
2. define a wrapper class DeprecatedUTF8 that is not @deprecated.

I prefer the second option in this case since it keeps FSEditLog.java and other places clean and still makes it explicit that a deprecated class is used.

This is part of spring cleaning effort to remove warnings in javac. I will attach a patch for the second option.

Issue Links

• relates to: HADOOP-5866 Move DeprecatedUTF8 to o.a.h.hdfs
• relates to: HADOOP-414 replace class UTF8 with class Text