Handling javac "deprecated" warning for using UTF8
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Key: HADOOP-5823
URL: https://issues.apache.org/jira/browse/HADOOP-5823
Project: Hadoop Core
Issue Type: Bug
Components: build
Affects Versions: 0.20.0
Reporter: Raghu Angadi
Assignee: Raghu Angadi
Fix For: 0.21.0
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.
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