RDD Storage Info for Union
:- *(1) ColumnarToRow
: +- InMemoryTableScan [fractile#94391017, annual_ret#94391024, annual_resret#94391105, numcos#94391106]
: +- InMemoryRelation [fractile#94391017, overall#94391018, annual_ret#94391024, annual_resret#94391105, numcos#94391106], StorageLevel(disk, memory, deserialized, 1 replicas)
: +- *(1) Project [CASE WHEN ((fractile#94390930 = NA) OR (fractile#94390930 = null)) THEN null ELSE cast(fractile#94390930 as float) END AS fractile#94391017, CASE WHEN ((overall#94390931 = NA) OR (overall#94390931 = null)) THEN null ELSE cast(overall#94390931 as int) END AS overall#94391018, CASE WHEN ((annual_ret#94390932 = NA) OR (annual_ret#94390932 = null)) THEN null ELSE cast(annual_ret#94390932 as float) END AS annual_ret#94391024, CASE WHEN ((annual_resret#94390933 = NA) OR (annual_resret#94390933 = null)) THEN null ELSE cast(annual_resret#94390933 as float) END AS annual_resret#94391105, CASE WHEN ((numcos#94390934 = NA) OR (numcos#94390934 = null)) THEN null ELSE cast(num...