paleolimbot commented on code in PR #41765:
URL: https://github.com/apache/arrow/pull/41765#discussion_r1609979900


##########
cpp/src/parquet/types.cc:
##########
@@ -464,7 +464,10 @@ std::shared_ptr<const LogicalType> LogicalType::FromThrift(
   } else if (type.__isset.FLOAT16) {
     return Float16LogicalType::Make();
   } else {
-    throw ParquetException("Metadata contains Thrift LogicalType that is not 
recognized");
+    // Or provide some mechanism to optionally error here?

Review Comment:
   Hmm...it looks like there was already a concept for this (that was used for 
unknown legacy converted types): the `UndefinedLogicalType()`. I'm not sure how 
to test this, though!



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