wgtmac commented on code in PR #35520:
URL: https://github.com/apache/arrow/pull/35520#discussion_r1189477737
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cpp/src/parquet/file_writer.cc:
##########
@@ -219,17 +219,17 @@ class RowGroupSerializer : public
RowGroupWriter::Contents {
closed_ = true;
CheckRowsWritten();
- for (size_t i = 0; i < column_writers_.size(); i++) {
- if (column_writers_[i]) {
- total_bytes_written_ += column_writers_[i]->Close();
+ // If ColumnWriter::Close thrown an exception, avoid
+ // have bad states in column_writers_.
Review Comment:
```suggestion
// Avoid invalid state if ColumnWriter::Close() throws internally.
```
##########
cpp/src/parquet/file_writer.cc:
##########
@@ -219,17 +219,17 @@ class RowGroupSerializer : public
RowGroupWriter::Contents {
closed_ = true;
CheckRowsWritten();
- for (size_t i = 0; i < column_writers_.size(); i++) {
- if (column_writers_[i]) {
- total_bytes_written_ += column_writers_[i]->Close();
+ // If ColumnWriter::Close thrown an exception, avoid
+ // have bad states in column_writers_.
Review Comment:
If anything wrong happens here, should we let the FileSerializer know that
it cannot accept any write any more?
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