Gopal V created HIVE-14454:
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Summary: Vectorization: Varchar() -> String should not copy
underlying buffers
Key: HIVE-14454
URL: https://issues.apache.org/jira/browse/HIVE-14454
Project: Hive
Issue Type: Improvement
Components: Vectorization
Affects Versions: 2.2.0
Reporter: Gopal V
The base byte[] array for a ByteColumnVector is immutable - all changes are
made to a scratch column.
{code}
@Override
protected void func(BytesColumnVector outV, byte[][] vector, int[] start,
int[] length, int i) {
outV.setVal(i, vector[i], start[i], length[i]);
}
{code}
the setVal copies the byte[] array, losing dictionary encoding in the process.
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