RDD Storage Info for Union
:- *(1) ColumnarToRow
: +- InMemoryTableScan [fractile#94377110, annual_ret#94377112, annual_resret#94377114, numcos#94377117]
: +- InMemoryRelation [fractile#94377110, overall#94377111, annual_ret#94377112, annual_resret#94377114, numcos#94377117], StorageLevel(disk, memory, deserialized, 1 replicas)
: +- *(1) Project [CASE WHEN ((fractile#94376991 = NA) OR (fractile#94376991 = null)) THEN null ELSE cast(fractile#94376991 as float) END AS fractile#94377110, CASE WHEN ((overall#94376992 = NA) OR (overall#94376992 = null)) THEN null ELSE cast(overall#94376992 as int) END AS overall#94377111, CASE WHEN ((annual_ret#94376993 = NA) OR (annual_ret#94376993 = null)) THEN null ELSE cast(annual_ret#94376993 as float) END AS annual_ret#94377112, CASE WHEN ((annual_resret#94376994 = NA) OR (annual_resret#94376994 = null)) THEN null ELSE cast(annual_resret#94376994 as float) END AS annual_resret#94377114, CASE WHEN ((numcos#94376995 = NA) OR (numcos#94376995 = null)) THEN null ELSE cast(num...