spark.read.option("header", "true").csv("utf8xFF.csv")

java.lang.ArrayIndexOutOfBoundsException: 63
 at org.apache.spark.unsafe.types.UTF8String.numBytesForFirstByte(UTF8String.java:191)
 at org.apache.spark.unsafe.types.UTF8String.numChars(UTF8String.java:206)

hexdump -C ~/tmp/utf8xFF.csv
00000000 63 68 61 6e 6e 65 6c 2c 63 6f 64 65 0d 0a 55 6e |channel,code..Un|
00000010 69 74 65 64 2c 31 32 33 0d 0a 41 42 47 55 4e ff |ited,123..ABGUN.|
00000020 2c 34 35 36 0d |,456.|
00000025

spark.read.option("header", "true").option("multiline", "true").csv("utf8xFF.csv")

+-------+-----+
|channel|code
+-------+-----+
| United| 123
| ABGUN�| 456
+-------+-----+

import org.apache.spark.sql.types._
val schema = new StructType().add("channel", StringType).add("code", StringType)
spark.read.option("header", "true").schema(schema).csv("utf8xFF.csv").show

+-------+----+
|channel|code|
+-------+----+
| United| 123|
| ABGUN�| 456|
+-------+----+