BlockReaderLocal#skip performs unnecessary IO
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Key: HDFS-2655
URL: https://issues.apache.org/jira/browse/HDFS-2655
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 0.23.1
Reporter: Eli Collins
Per HDFS-2654 BlockReaderLocal#skip performs the skip by reading the data so we
stay in sync with checksums. This could be implemented more efficiently in the
future to skip to the beginning of the appropriate checksum chunk and then only
read to the middle of that chunk.
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