wgtmac commented on code in PR #35298:
URL: https://github.com/apache/arrow/pull/35298#discussion_r1175382767
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cpp/src/arrow/ipc/read_write_test.cc:
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@@ -271,6 +280,29 @@ TEST_F(TestSchemaMetadata, NestedFields) {
CheckSchemaRoundtrip(schema);
}
+// Verify that nullable=false is well-preserved for child fields of map type.
+TEST_F(TestSchemaMetadata, MapField) {
+ auto key = field("key", int32(), false);
+ auto item = field("item", int32(), false);
Review Comment:
You may reproduce the bug with this test case without the fix. @lidavidm
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