Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/16428
BTW, the reason I asked that in
https://github.com/apache/spark/pull/16428#issuecomment-269635303 is I remember
that I checked the reading/writing paths related with encodings before and the
encoding should be set to line record reader.
I just now double-chekced that newlines were `\n` for each batch due to
[`TextOutputFormat`s record
writer](https://github.com/apache/hadoop/blob/f67237cbe7bc48a1b9088e990800b37529f1db2a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/output/TextOutputFormat.java#L48-L49)
but it seems it was changed in [the recent
commit](https://github.com/apache/spark/pull/16089/files#diff-6a14f6bb643b1474139027d72a17f41aL203).
So, now, it seems the newlines are dependent on univocity library.
We should add some tests for this for sure, in `CSVSuite` to verify this
behaviour and prevent regressions.
As a small side note, we don't currently support non-ascii compatible
encodings in reading path if I haven't missed some changes in this path.
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