yaooqinn commented on code in PR #46810:
URL: https://github.com/apache/spark/pull/46810#discussion_r1621619425
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/csv/CSVExprUtils.scala:
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@@ -120,6 +120,11 @@ object CSVExprUtils {
* @throws SparkIllegalArgumentException if any of the individual input
chunks are illegal
*/
def toDelimiterStr(str: String): String = {
+ if (str == null) {
Review Comment:
QQ: Is "" valid? Do we know how users specified null?
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