Hi, > Is it possible to use regex as column qualifier in the get operation ?
no, that's not possible. For a "get"[1] operation you need to specify the exact row key you are looking for and there will be at most one result. You can use a "scan"[2] (which may return multiple results) in combination with a RowFilter[3] and a RegexStringComparator[4]. See the tests[5] for a few examples. Cheers, Lars [1] <http://hadoop.apache.org/hbase/docs/r0.20.3/api/org/apache/hadoop/hbase/client/HTable.html#get(org.apache.hadoop.hbase.client.Get)> [2] <http://hadoop.apache.org/hbase/docs/r0.20.3/api/org/apache/hadoop/hbase/client/HTable.html#getScanner(org.apache.hadoop.hbase.client.Scan)> [3] <http://hadoop.apache.org/hbase/docs/r0.20.3/api/org/apache/hadoop/hbase/filter/RowFilter.html> [4] <http://hadoop.apache.org/hbase/docs/r0.20.3/api/org/apache/hadoop/hbase/filter/RegexStringComparator.html> [5] <http://svn.apache.org/viewvc/hadoop/hbase/tags/0.20.3/src/test/org/apache/hadoop/hbase/filter/TestFilter.java?revision=902976&view=markup>
