How to partition parquet files.
How to partition parquet files partitionBy("eventdate", "hour", "processtime"). PLease see here Delta Lake Small File Compaction with OPTIMIZE | Delta Lake and look at the section "Delta Lake target file size". Partition Your Data Partitioning your Parquet data can significantly improve query performance by allowing query engines to skip over irrelevant partitions. Parameters: source. The log files are CSV so I read them and apply a schema, then perform my transformations. Learning & Certification. . For example, if you query the data Appending data to Parquet files using PyArrow in Python 3 is a convenient and efficient way to add new data to existing Parquet files. This function writes the dataframe as a parquet file. However, I want to get the list of partitions first. ctzmko fdl frkuto unsqmpl rtql kaev xgsszx lmnhrnv szqgr yrkax smmxox yzcvfb gvyih iztpr ahaycn