Danylo Zherebetskyy questions

Danylo Zherebetskyy answers

• Why join in spark in local mode is so slow?
• Spark sql queries vs dataframe functions
• How to get the last row from DataFrame?
• Do I need to normalize (or scale) data for randomForest (R package)? [closed]
• How to select last row and also how to access PySpark dataframe by index?
• UNRESOLVED DEPENDENCIES error while trying to create jar
• sql: check if entry in table A exists in table B