gabotechs commented on code in PR #18192:
URL: https://github.com/apache/datafusion/pull/18192#discussion_r2446849691
##########
datafusion/proto/proto/datafusion.proto:
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@@ -865,6 +865,10 @@ message PhysicalExprNode {
UnknownColumn unknown_column = 20;
}
+
+ // Optional ID for caching during deserialization.
+ // Set to the Arc pointer address during serialization to enable
deduplication.
Review Comment:
🤔 I'm not sure if this addresses the fact that serialization will most
likely happen on one machine, but deserialization would happen in a different
one.
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