dumitru questions

dumitru answers

• group by and picking up first value in spark sql [duplicate]
• Apply custom function to cells of selected columns of a data frame in PySpark
• Reading JSON files into Spark Dataset and adding columns from a separate Map
• Add scripts dynamically as jobs using property/xml file in Quartz
• Attempt to do update or delete using transaction manager that does not support these operations
• KEYSTORE.JKS exists FAILED - exited with code 1 #662 - Confluent kafka
• Spark Streaming: Kafka group id not permitted in Spark Structured Streaming