[DRILL-8070] format-excel assumes that rowIterator returns every row

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Execution - Data Types
• Assignee: Charles Givre
• Reporter: PJ Fanning
• Created: 07/Dec/21 10:54
• Updated: 03/Jan/22 14:04
• Resolved: 03/Jan/22 14:04

Description

In ExcelBatchReader, this code makes the wrong assumption:

    for (int i = 1; i < rowNumber; i++) {
         currentRow = rowIterator.next();
    } 

 
There are 2 for loops like this.

Empty Rows will not necessarily be returned by the iterator. Basically, rows without populated cells could easily be skipped. Think of the Sheet as being represented as a sparse matrix - because it is stored like this.