Examples

This abbreviated example writes data to an HBase table using HBase Shell and then scans the table to show the result

hbase> put 'test', 'row1', 'cf:a', 'value1'
0 row(s) in 0.1770 seconds

hbase> put 'test', 'row2', 'cf:b', 'value2'
0 row(s) in 0.0160 seconds

hbase> put 'test', 'row3', 'cf:c', 'value3'
0 row(s) in 0.0260 seconds  
hbase> scan 'test'
ROW                   COLUMN+CELL
 row1                 column=cf:a, timestamp=1403759475114, value=value1
 row2                 column=cf:b, timestamp=1403759492807, value=value2
 row3                 column=cf:c, timestamp=1403759503155, value=value3
3 row(s) in 0.0440 seconds

This abbreviated example uses the HBase API to write data to an HBase table, using the automatic timestamp created by the Region Server.

publicstaticfinalbyte[] CF = "cf".getBytes();
publicstaticfinalbyte[] ATTR = "attr".getBytes();
...
Put put = new Put(Bytes.toBytes(row));
put.add(CF, ATTR, Bytes.toBytes( data));
htable.put(put);

This example uses the HBase API to write data to an HBase table, specifying the timestamp.

publicstaticfinalbyte[] CF = "cf".getBytes();
publicstaticfinalbyte[] ATTR = "attr".getBytes();
...
Put put = new Put( Bytes.toBytes(row));
long explicitTimeInMs = 555;  // just an example
put.add(CF, ATTR, explicitTimeInMs, Bytes.toBytes(data));
htable.put(put);