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hbase

Put to Key Value on HBase

I am trying to convert a Put object to a KeyValue objects. How can I achieve that on HBase? I have looked at the source code but didn't found a way to do that. My Put object contains rowkey and 2 columns (A,B columns).

Thanks for helpers

Solution

  • Your Put with 2 columns is not a Key Value, but 2 Key Values.

    Check this method in Put class:

    KeyValue createPutKeyValue(byte[] family, byte[] qualifier, long ts, byte[] value) {
  return new KeyValue(this.row, family, qualifier, ts, KeyValue.Type.Put, value);
}

    KeyValue contains cell information - a key, column family with column, timestamp and data.

    So for your case

    List<KeyValue> keyValues = new ArrayList<>();
for (Map.Entry<byte[], List<Cell> entry : put.getFamilyCellMap()) {
    byte[] cf = entry.getKey();
    List<Cell> cells = entry.getValue();
    for (Cell cell : cells) {
      // get row, column, ts and value using Cell api
      keyValues.add(new KeyValue(...));
    }
}