dpeacock questions

dpeacock answers

• Is there a possibility to keep column order when reading parquet?
• Does spark automatically cache some results?
• error when starting the spark shell
• How to Get the file name for record in spark RDD (JavaRDD)
• What is the preferred way to avoid SQL injections in Spark-SQL (on Hive)
• Spark - Multiple filters on RDD in one pass
• How to join two RDDs in spark with python?
• Elasticsearch: sort by field with null values last
• Spark - How to count number of records by key
• PySpark groupByKey returning pyspark.resultiterable.ResultIterable