Chris Nauroth created HDFS-7988:
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             Summary: Replace usage of ExactSizeInputStream with 
LimitInputStream.
                 Key: HDFS-7988
                 URL: https://issues.apache.org/jira/browse/HDFS-7988
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Chris Nauroth
            Priority: Minor


HDFS has a class named {{ExactSizeInputStream}} used in the protobuf 
translation layer.  This class wraps another {{InputStream}}, but constraints 
the readable bytes to a specified length.  The functionality is nearly 
identical to {{LimitInputStream}} in Hadoop Common, with some differences in 
semantics regarding premature EOF.  This issue proposes to eliminate 
{{ExactSizeInputStream}} in favor of {{LimitInputStream}} to reduce the size of 
the codebase.



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