wesm commented on a change in pull request #7108:
URL: https://github.com/apache/arrow/pull/7108#discussion_r420739547
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File path: cpp/src/parquet/arrow/reader_internal.h
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@@ -76,7 +76,8 @@ class FileColumnIterator {
return nullptr;
}
- auto row_group_reader = reader_->RowGroup(row_groups_.front());
+ int row_group_index = row_groups_.front();
+ auto row_group_reader = reader_->RowGroup(row_group_index);
Review comment:
Without this change I was unable to determine at which row group index
the failure occurred in the debugger. I can revert it but it seems useful to be
able to know
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