insert overwrite directory <path> using stored as parquet does not creates snappy.parquet data file at HDFS side

1. insert overwrite directory '/opt/trash_u/' using parquet select 2;
2. Check at hdfs side ./hdfs dfs -ls /opt/trash_u
data file created with snappy.parquet as below
/opt/trash_u/part-00000-6de61796-4ebd-40b9-a303-d53182c89332-c000.snappy.parquet
3. insert overwrite directory '/opt/trash_u/' stored as parquet select 2;
4. Check at hdfs side ./hdfs dfs -ls /opt/trash_u, data file created with snappy.parquet as below
/opt/trash_u/part-00000-50d5d863-0389-4cba-ae5f-ea3f89cd2eab-c000