pitrou commented on a change in pull request #10871:
URL: https://github.com/apache/arrow/pull/10871#discussion_r685391213
##########
File path: cpp/src/arrow/array/validate.cc
##########
@@ -637,6 +638,23 @@ struct ValidateArrayFullImpl {
ARROW_EXPORT
Status ValidateArrayFull(const ArrayData& data) {
+ if (data.null_count != -1) {
+ int64_t actual_null_count;
+ if (HasValidityBitmap(data.type->id()) && data.buffers[0]) {
+ // Do not call GetNullCount() as it would also set the `null_count`
member
+ actual_null_count =
+ data.length - CountSetBits(data.buffers[0]->data(), data.offset,
data.length);
+ } else if (data.type->id() == Type::NA) {
+ actual_null_count = data.length;
Review comment:
https://issues.apache.org/jira/browse/ARROW-13589 may help spot such
redundant checks.
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