Add a binary comparator that only compares up to the length of the supplied
byte array
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Key: HBASE-2220
URL: https://issues.apache.org/jira/browse/HBASE-2220
Project: Hadoop HBase
Issue Type: New Feature
Components: filters
Reporter: Bruno Dumon
Priority: Minor
Attachments: binary-prefix-comparator-patch.txt
This new comparator is similar to the existing BinaryComparator, but only
compares up to the length of the supplied byte array.
The use-case I need this for is secondary indexes. I build a table where the
row keys have the form {value}{row key}, where {value} is a fixed length byte
array. On this index table I then would like to perform range scans on just the
fixed length {value} part. The BinaryPrefixComparator supplied in this patch
enables exactly this, when used in combination with the RowFilter.
See also mail at
http://mail-archives.apache.org/mod_mbox/hadoop-hbase-user/201002.mbox/%[email protected]%3e
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