TextInputFormat is slow compared to reading files.
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Key: HADOOP-2285
URL: https://issues.apache.org/jira/browse/HADOOP-2285
Project: Hadoop
Issue Type: Bug
Components: mapred
Affects Versions: 0.15.0
Reporter: Owen O'Malley
Fix For: 0.16.0
The LineRecordReader reads from the source byte by byte, which seems to be half
as fast as if the readLine method was defined on the memory buffer directly
instead of as an InputStream.
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