Add comment

This commit is contained in:
alesapin 2020-03-23 16:40:14 +03:00
parent b0578d3faa
commit 048a61695c

View File

@ -92,8 +92,10 @@ public:
virtual bool supportsVerticalMerge() const { return false; }
/// NOTE: Returns zeros if column files are not found in checksums.
/// Otherwise return information about column size on disk.
ColumnSize getColumnSize(const String & column_name, const IDataType & /* type */) const;
/// Return information about column size on disk for all columns in part
ColumnSize getTotalColumnsSize() const { return total_columns_size; }
virtual String getFileNameForColumn(const NameAndTypePair & column) const = 0;