update descriptions

Signed-off-by: Paul Dittamo <[email protected]>

flyteidl/protos/flyteidl/core/workflow.proto

@@ -152,10 +152,16 @@ message ArrayNode {
     google.protobuf.BoolValue is_original_sub_node_interface = 6;
 
     enum DataMode {
-        // Indicates the ArrayNode will utilize the passed in, single input file for all sub-nodes.
+        // Indicates the ArrayNode's input is a list of input values that map to subNode executions.
+        // The file path set for the subNode will be the ArrayNode's input file, but the in-memory
+        // value utilized in propeller will be the individual value for each subNode execution.
+        // SubNode executions need to be able to read in and parse the individual value to execute correctly.
         SINGLE_INPUT_FILE = 0;
 
-        // Indicates the ArrayNode will create input files for each sub-node.
+        // Indicates the ArrayNode's input is a list of input values that map to subNode executions.
+        // Propeller will create input files for each ArrayNode subNode by parsing the inputs and
+        // setting the InputBindings on each subNodeSpec. Both the file path and in-memory input values will
+        // be the individual value for each subNode execution.
         INDIVIDUAL_INPUT_FILES = 1;
     }