Galuoises questions

Galuoises answers

• Pandas cannot read parquet files created in PySpark
• Get schema of parquet file in Python
• How to use environment variables in docker compose
• PySpark: create dataframe from random uniform disribution
• Unable to connect to redis from another docker container
• Apache Spark upgrade from 1.5.2 to 1.6.0 using homebrew leading to permission denied error during execution
• java.lang.ClassNotFoundException: org.apache.spark.sql.Dataset
• Hash function in spark
• sqlalchemy.orm.exc.UnmappedInstanceError: Class 'builtins.NoneType' is not mapped
• ltree extension installed, but create table still throws error