felipecrv commented on code in PR #37174:
URL: https://github.com/apache/arrow/pull/37174#discussion_r1297291851
##########
cpp/src/arrow/c/bridge_test.cc:
##########
@@ -443,6 +444,13 @@ TEST_F(TestSchemaExport, Union) {
{ARROW_FLAG_NULLABLE});
}
+TEST_F(TestSchemaExport, RunEndEncoded) {
+ TestNested(run_end_encoded(int16(), uint8()), {"+r", "s", "C"},
+ {"", "run_ends", "values"}, {ARROW_FLAG_NULLABLE, 0,
ARROW_FLAG_NULLABLE});
+ TestNested(run_end_encoded(int64(), int32()), {"+r", "l", "i"},
Review Comment:
The best I can do is a string array because `run_end_encode` doesn't produce
REE-encoded arrays of nested values.
https://github.com/apache/arrow/blob/main/cpp/src/arrow/compute/kernels/vector_run_end_encode.cc#L601-L621
My reasoning for de-prioritizing that was that gains from run-end encoding
complex objects (lists, structs) are less likely.
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