Be specific about required csv header definition (#5007)
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@ -226,7 +226,7 @@ func newCSVParser(metricName string,
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defaultTags map[string]string) (Parser, error) {
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if headerRowCount == 0 && len(columnNames) == 0 {
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return nil, fmt.Errorf("there must be a header if `csv_column_names` is not specified")
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return nil, fmt.Errorf("`csv_header_row_count` must be defined if `csv_column_names` is not specified")
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}
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if delimiter != "" {
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