AlenkaF commented on code in PR #14029:
URL: https://github.com/apache/arrow/pull/14029#discussion_r961590794
##########
cpp/src/parquet/schema.cc:
##########
@@ -795,12 +795,27 @@ void SchemaDescriptor::Init(NodePtr schema) {
}
bool SchemaDescriptor::Equals(const SchemaDescriptor& other) const {
+ return this->Equals(other, nullptr);
+}
+
+bool SchemaDescriptor::Equals(
+ const SchemaDescriptor& other,
+ std::shared_ptr<std::stringstream> diff_msg = NULLPTR) const {
if (this->num_columns() != other.num_columns()) {
+ if (diff_msg != nullptr) {
+ *diff_msg.get() << "This schema has " << this->num_columns()
+ << " columns, other has " << other.num_columns();
+ }
return false;
}
for (int i = 0; i < this->num_columns(); ++i) {
if (!this->Column(i)->Equals(*other.Column(i))) {
+ if (diff_msg != nullptr) {
+ *diff_msg.get() << "These two columns differ:" << std::endl
+ << this->Column(i)->ToString() << std::endl
+ << other.Column(i)->ToString();
Review Comment:
Do you think it would make any sense to replace "This schema ..." with
something more informative? I think in the test, `this` is `meta1` and `other`
is `meta2`? I think that would help when debugging the error.
Similar for "These" being `meta1` and `meta2` columns on position `i-1`
differ?
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
