Github user zasdfgbnm commented on a diff in the pull request:
https://github.com/apache/spark/pull/18444#discussion_r126806942
--- Diff: core/src/main/scala/org/apache/spark/api/python/SerDeUtil.scala
---
@@ -72,7 +72,11 @@ private[spark] object SerDeUtil extends Logging {
val typecode = args(0).asInstanceOf[String].charAt(0)
// This must be ISO 8859-1 / Latin 1, not UTF-8, to interoperate
correctly
val data =
args(1).asInstanceOf[String].getBytes(StandardCharsets.ISO_8859_1)
- construct(typecode, machineCodes(typecode), data)
+ val machine_code = machineCodes(typecode)
+ // fix data alignment
+ val unit_length = if (machine_code==18 || machine_code==19) 2 else
4
+ val aligned_data = data ++ Array.fill[Byte](unit_length -
data.length % unit_length)(0)
--- End diff --
Not done yet. I think this will only works on little endian
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