How to use

deserializeByRef

method

in

org.apache.hadoop.hive.ql.exec.vector.VectorDeserializeRow

private void doSmallTableKeyDeserializeRow(VectorizedRowBatch batch, int batchIndex,
  byte[] keyBytes, int keyOffset, int keyLength)
    throws HiveException {
 smallTableKeyOuterVectorDeserializeRow.setBytes(keyBytes, keyOffset, keyLength);
 try {
  // Our hash tables are immutable.  We can safely do by reference STRING, CHAR/VARCHAR, etc.
  smallTableKeyOuterVectorDeserializeRow.deserializeByRef(batch, batchIndex);
 } catch (Exception e) {
  throw new HiveException(
    "\nDeserializeRead detail: " +
      smallTableKeyOuterVectorDeserializeRow.getDetailedReadPositionString(),
    e);
 }
}

protected void doSmallTableValueDeserializeRow(VectorizedRowBatch batch, int batchIndex,
  ByteSegmentRef byteSegmentRef, VectorMapJoinHashMapResult hashMapResult)
    throws HiveException {
 byte[] bytes = byteSegmentRef.getBytes();
 int offset = (int) byteSegmentRef.getOffset();
 int length = byteSegmentRef.getLength();
 smallTableValueVectorDeserializeRow.setBytes(bytes, offset, length);
 try {
  // Our hash tables are immutable.  We can safely do by reference STRING, CHAR/VARCHAR, etc.
  smallTableValueVectorDeserializeRow.deserializeByRef(batch, batchIndex);
 } catch (Exception e) {
  throw new HiveException(
    "\nHashMapResult detail: " +
      hashMapResult.getDetailedHashMapResultPositionString() +
    "\nDeserializeRead detail: " +
      smallTableValueVectorDeserializeRow.getDetailedReadPositionString(),
    e);
 }
}

protected void doSmallTableDeserializeRow(VectorizedRowBatch batch, int batchIndex,
  ByteSegmentRef byteSegmentRef, VectorMapJoinHashMapResult hashMapResult)
    throws HiveException {
 byte[] bytes = byteSegmentRef.getBytes();
 int offset = (int) byteSegmentRef.getOffset();
 int length = byteSegmentRef.getLength();
 smallTableVectorDeserializeRow.setBytes(bytes, offset, length);
 try {
  // Our hash tables are immutable.  We can safely do by reference STRING, CHAR/VARCHAR, etc.
  smallTableVectorDeserializeRow.deserializeByRef(batch, batchIndex);
 } catch (Exception e) {
  throw new HiveException(
    "\nHashMapResult detail: " +
      hashMapResult.getDetailedHashMapResultPositionString() +
    "\nDeserializeRead detail: " +
      smallTableVectorDeserializeRow.getDetailedReadPositionString(),
    e);
 }
}