Missing csv last blank column

[tkhm]

Problem

Converting csv which has blank column at the end of line failed caused by ParquetEncodingException.

The failed csv is like the following(when read the line no.2, the exception will occur):

1,aaa,bbb,ccc,,eee
2,aaa,bbb,ccc,ddd,
3,,,,,eee

Error message's example is here:

Invalid input data. Expecting 6 columns. Input had 5 columns...

How to fix

Here is my fix example: tkhm@0972941
(It works at least for me, should I make a PR?)

I'm not sure it is fit for this project policy, but my solution is that when the column size difference is detected and its diff is 1, add the blank column to the end of list.