felipecrv commented on code in PR #33641:
URL: https://github.com/apache/arrow/pull/33641#discussion_r1109071723
##########
cpp/src/arrow/array/concatenate.cc:
##########
@@ -436,6 +438,28 @@ class ConcatenateImpl {
return Status::OK();
}
+ Status Visit(const RunEndEncodedType& type) {
+ int64_t physical_length = 0;
+ for (const auto& input : in_) {
+ if (internal::AddWithOverflow(physical_length,
+
ree_util::FindPhysicalLength(ArraySpan(*input)),
+ &physical_length) ||
+ // Make sure we can safely downcast to int32_t
Review Comment:
This is from @zagto and I assumed it was due to
https://arrow.apache.org/docs/dev/format/Columnar.html#array-lengths
But note that run-ends are cumulative sums of the run-lengths, so summing
the lengths of `INT_MAX` runs wouldn't really fit in 32-bit integers.
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