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https://issues.apache.org/jira/browse/DRILL-8070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17455995#comment-17455995
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ASF GitHub Bot commented on DRILL-8070:
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pjfanning opened a new pull request #2399:
URL: https://github.com/apache/drill/pull/2399
# [DRILL-8070](https://issues.apache.org/jira/browse/DRILL-8070):
format-excel assumes that rowIterator returns every row
## Description
Replaces the code for skipping rows with a version that checks the rownum as
it iterates
## Documentation
No changes needed
## Testing
Unit tests. Advice about how to add a test that changes the
ExcelBatchReader.ExcelReaderConfig would be appreciated. There do not appear to
be any existing tests that set the ExcelReaderConfig.
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> format-excel assumes that rowIterator returns every row
> -------------------------------------------------------
>
> Key: DRILL-8070
> URL: https://issues.apache.org/jira/browse/DRILL-8070
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types
> Reporter: PJ Fanning
> Priority: Major
>
> In ExcelBatchReader, this code makes the wrong assumption:
> {code:java}
> for (int i = 1; i < rowNumber; i++) {
> currentRow = rowIterator.next();
> } {code}
>
> 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.
>
>
>
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