how to read from HDFS multiple parquet files with spark.index.create .mode(" overwrite").indexBy($"cellid").parquet · Issue #95 · lightcopy/parquet-index · GitHub
PySpark Write Parquet | Working of Write Parquet in PySpark
How to Apache Spark read column optimization
APACHE SPARK AND DELTA LAKE, A POWERFUL COMBINATION | by Nabarun Chakraborti | Medium
Feature: be able to overwrite parquet file · Issue #152 · sparklyr/sparklyr · GitHub