Deleting Data

Function

Delete data (a row of data or data sets) using the delete method of a Table instance.

Example Code

The following code snippet belongs to the testDelete method in the HBaseSample class of the com.huawei.bigdata.hbase.examples package.

public void testDelete() {
    LOG.info("Entering testDelete.");

    byte[] rowKey = Bytes.toBytes("012005000201");

    Table table = null;
    try {
      // Instantiate an HTable object.
      table = conn.getTable(tableName);

      // Instantiate a Delete object.
      Delete delete = new Delete(rowKey);

      // Submit a delete request.
      table.delete(delete);

      LOG.info("Delete table successfully.");
    } catch (IOException e) {
      LOG.error("Delete table failed " ,e);
    } finally {
      if (table != null) {
        try {
          // Close the HTable object.
          table.close();
        } catch (IOException e) {
          LOG.error("Close table failed " ,e);
        }
      }
    }
    LOG.info("Exiting testDelete.");
  }     

If secondary index is created in the family of the column where the deleted cell is, the index data is synchronously deleted.