Wilfred Spiegelenburg created MAPREDUCE-6558:
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             Summary: multibyte delimiters with compressed input files generate 
duplicate records
                 Key: MAPREDUCE-6558
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6558
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv1, mrv2
    Affects Versions: 2.7.2
            Reporter: Wilfred Spiegelenburg
            Assignee: Wilfred Spiegelenburg


This is the follow up for MAPREDUCE-6549. Compressed files cause record 
duplications as shown in different junit tests. The number of duplicated 
records changes with the splitsize:

Unexpected number of records in split (splitsize = 10)
Expected: 41051
Actual: 45062

Unexpected number of records in split (splitsize = 100000)
Expected: 41051
Actual: 41052

Test passes with splitsize = 147445 which is the compressed file length.The 
file is a bzip2 file with 100k blocks and a total of 11 blocks



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