RDD Storage Info for Union
:- *(1) ColumnarToRow
: +- InMemoryTableScan [fractile#94362813, annual_ret#94362815, annual_resret#94362827, numcos#94362836]
: +- InMemoryRelation [fractile#94362813, overall#94362814, annual_ret#94362815, annual_resret#94362827, numcos#94362836], StorageLevel(disk, memory, deserialized, 1 replicas)
: +- *(1) Project [CASE WHEN ((fractile#94362738 = NA) OR (fractile#94362738 = null)) THEN null ELSE cast(fractile#94362738 as float) END AS fractile#94362813, CASE WHEN ((overall#94362739 = NA) OR (overall#94362739 = null)) THEN null ELSE cast(overall#94362739 as int) END AS overall#94362814, CASE WHEN ((annual_ret#94362740 = NA) OR (annual_ret#94362740 = null)) THEN null ELSE cast(annual_ret#94362740 as float) END AS annual_ret#94362815, CASE WHEN ((annual_resret#94362741 = NA) OR (annual_resret#94362741 = null)) THEN null ELSE cast(annual_resret#94362741 as float) END AS annual_resret#94362827, CASE WHEN ((numcos#94362742 = NA) OR (numcos#94362742 = null)) THEN null ELSE cast(num...