Hi Team, Reach out to you for one issue regarding Apache Drill while creating Parquet file from another Parquet file (generated from another tool). Please find the details below. I have created following Jira ticket with more details- https://issues.apache.org/jira/browse/DRILL-7736
*Summary-* I am re-writing one Parquet file from another Parquet file using CTAS PARTITION BY (). The source Parquet file is generated from Python. But when I am trying to rewrite the parquet in Drill I am getting error. The details of the error is given below. *Version of Apache Drill* - 1.17 *Memory config-* DRILL_HEAP=16 G DRILL_MAX_DIRECT_MEMORY=32G *Config information which I tried-* exec.sort.disable_managed=true store.parquet.reader.pagereader.async=true; store.parquet.reader.pagereader.bufferedread=false; planner.memory.max_query_memory_per_node=31147483648 drill.exec.memory.operator.output_batch_size=4194304 *Details of volume of data-* The number of rows for which I am trying to CTAS is - 25245241. No of columns 145. FYI - I am able to create Parquet using CTAS for less number of rows. *CTAS script-* CREATE TABLE dfs.root.<Table_name> PARTITION BY (<Column1>,<Column2>,<Column3>) AS SELECT * FROM dfs.root.<source_parquet>; Please suggest me how we can fix this. Thanks n Regards, *Sreeparna Bhabani*