There are a large number of Java warnings in HBase
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                 Key: HBASE-876
                 URL: https://issues.apache.org/jira/browse/HBASE-876
             Project: Hadoop HBase
          Issue Type: Bug
    Affects Versions: 0.18.0
            Reporter: Jim Kellerman
            Assignee: Jim Kellerman
            Priority: Minor
             Fix For: 0.19.0


There are a large number of Java warnings in the current HBase code base 
including:
- exceptions that do not define serialVersionUID
- classes that use the raw type WritableComparable instead of 
WritableComparable<T>
- classes or interfaces that declare public members that are not a part of the 
public API. In this case they should be moved to a place where their visibility 
needs not be public. Additionally, there are a number of classes that declare 
public members that need not be. Make them protected or private or default as 
needed
- methods that have unnecessary else clauses
- potential null pointer access
- inner classes that are public that should be default or protected (e.g. 
RegionHistoryInformation)
- assignment to an input parameter



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