Gabriel Reid created CRUNCH-546:
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Summary: Avoid CellUtil.cloneXXX in HFileUtils and HFileInputFormat
Key: CRUNCH-546
URL: https://issues.apache.org/jira/browse/CRUNCH-546
Project: Crunch
Issue Type: Improvement
Reporter: Gabriel Reid
Assignee: Gabriel Reid
HFileUtils and HFileInputFormat currently make use of the CellUtil.cloneXXX in
a number of places when comparing row, family, and qualifier values with a
constant.
The clone methods are relatively costly, as they require allocating a new byte
array and copying all data over into the new array on every call.
{{Bytes.equals}}, {{Bytes.compareTo}}, and {{ByteBuffer.wrap}} also accept a
byte array and offset and length parameters, which allows accessing portions of
KeyValues without copying them out into a separate byte array when using them
for comparison. We should replace the uses of CellUtil.cloneXXX with the
alternate calls to the above methods where possible.
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