RDD Storage Info for Union
:- *(1) ColumnarToRow
: +- InMemoryTableScan [fractile#94348253, annual_ret#94348255, annual_resret#94348256, numcos#94348257]
: +- InMemoryRelation [fractile#94348253, overall#94348254, annual_ret#94348255, annual_resret#94348256, numcos#94348257], StorageLevel(disk, memory, deserialized, 1 replicas)
: +- *(1) Project [CASE WHEN ((fractile#94348227 = NA) OR (fractile#94348227 = null)) THEN null ELSE cast(fractile#94348227 as float) END AS fractile#94348253, CASE WHEN ((overall#94348228 = NA) OR (overall#94348228 = null)) THEN null ELSE cast(overall#94348228 as int) END AS overall#94348254, CASE WHEN ((annual_ret#94348229 = NA) OR (annual_ret#94348229 = null)) THEN null ELSE cast(annual_ret#94348229 as float) END AS annual_ret#94348255, CASE WHEN ((annual_resret#94348230 = NA) OR (annual_resret#94348230 = null)) THEN null ELSE cast(annual_resret#94348230 as float) END AS annual_resret#94348256, CASE WHEN ((numcos#94348231 = NA) OR (numcos#94348231 = null)) THEN null ELSE cast(num...