Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/16928#discussion_r102648089
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/UnivocityParser.scala
---
@@ -202,21 +221,25 @@ private[csv] class UnivocityParser(
}
numMalformedRecords += 1
None
- } else if (options.failFast && schema.length != tokens.length) {
+ } else if (options.failFast && inputSchema.length != tokens.length) {
throw new RuntimeException(s"Malformed line in FAILFAST mode: " +
s"${tokens.mkString(options.delimiter.toString)}")
} else {
- val checkedTokens = if (options.permissive && schema.length >
tokens.length) {
- tokens ++ new Array[String](schema.length - tokens.length)
- } else if (options.permissive && schema.length < tokens.length) {
- tokens.take(schema.length)
+ val checkedTokens = if (options.permissive && inputSchema.length >
tokens.length) {
+ tokens ++ new Array[String](inputSchema.length - tokens.length)
+ } else if (options.permissive && inputSchema.length < tokens.length)
{
+ tokens.take(inputSchema.length)
} else {
tokens
}
try {
Some(convert(checkedTokens))
} catch {
+ case NonFatal(e) if options.permissive =>
+ val row = new GenericInternalRow(requiredSchema.length)
+ corruptFieldIndex.map(row(_) = UTF8String.fromString(input))
--- End diff --
BTW, I would like to note that this change is actually an important point
that we should avoid. This could cause some bugs that are hard to figure out.
(see [SPARK-16694](https://issues.apache.org/jira/browse/SPARK-16694))
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