Xiaowei Zhu created HDFS-12013:
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             Summary: libhdfs++: read with offset at EOF should return 0 bytes 
instead of error
                 Key: HDFS-12013
                 URL: https://issues.apache.org/jira/browse/HDFS-12013
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Xiaowei Zhu
            Assignee: Xiaowei Zhu
            Priority: Critical


The current behavior is when you read from offset == file_length, it will throw 
error:

"AsyncPreadSome: trying to begin a read past the EOF"

But read with offset at EOF should just return 0 bytes. The above error should 
only be thrown when offset > file_length.



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