Get get = new Get(row) .addFamily(FAMILY) .setFilter(new ColumnPrefixFilter(Bytes.toBytes("sess")));
should work. -Vlad On Mon, Aug 3, 2015 at 2:41 PM, Ted Yu <yuzhih...@gmail.com> wrote: > Is there column with prefix 'name' whose column name is longer than 'name' > (such as 'name0') ? > > If not, take a look at MultipleColumnPrefixFilter > > > Cheers > > On Mon, Aug 3, 2015 at 1:39 PM, Dmitry Minkovsky <dminkov...@gmail.com> > wrote: > > > I'm trying to construct a `Get` the does two things: > > > > - Gets a cell by specific, known column qualifier, and > > - Gets more cells by column qualifier prefix > > > > > > > > public class Test { > > > > public static final byte[] FAMILY = Bytes.toBytes("f"); > > > > public static void main(String[] args) throws IOException { > > > > // Make a connection > > > > > > Configuration config = HBaseConfiguration.create(); > > Connection connection = > ConnectionFactory.createConnection(config); > > > > Table table = connection.getTable(TableName.valueOf("t")); > > > > // Create a sample row > > > > byte[] row = Bytes.toBytes("row1"); > > > > > > Put put = new Put(row) > > .addColumn(FAMILY, Bytes.toBytes("name"), > > Bytes.toBytes("dima")) > > .addColumn(FAMILY, Bytes.toBytes("sess:100"), > > Bytes.toBytes("deadbeef")) > > .addColumn(FAMILY, Bytes.toBytes("age"), > Bytes.toBytes("30")); > > > > table.put(put); > > > > > > // Query for the sample row > > > > > > Get get = new Get(row) > > .addColumn(FAMILY, Bytes.toBytes("name")) > > .setFilter(new ColumnPrefixFilter(Bytes.toBytes("sess"))); > > > > Result result = table.get(get); > > > > System.out.println(result.size()); > > > > Map<byte[], byte[]> map = result.getFamilyMap(FAMILY); > > > > if (map != null) { > > for (Map.Entry<byte[], byte[]> entry : map.entrySet()) { > > System.out.println("key: `" + > > Bytes.toString(entry.getKey()) + "`, value: `" + > > Bytes.toString(entry.getValue()) + "`"); > > } > > } > > > > table.close(); > > connection.close(); > > } > > } > > > > > > The desire here is to get two columns/cells: "name" and "sess:100". > > However, I get no cells. I think this happens because I only add "name" > and > > then filter it out. What is the best way to get the desired effect? > > >