Github user yhuai commented on a diff in the pull request: https://github.com/apache/spark/pull/15329#discussion_r82425780 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonParser.scala --- @@ -114,6 +120,18 @@ class JacksonParser( } } + private def failedRecord(record: String): Seq[InternalRow] = { + if (options.dropMalformed) { + if (!isWarningPrintedForMalformedRecord) { + logWarning(dropmalformedModeWarningMessage(record)) + isWarningPrintedForMalformedRecord = true + } + Nil + } else { + throw new NotAllowedNullException(s"Null not allowed: $record") --- End diff -- Please explain why null is not allowed in the error message. Is it possible to know which field is not nullable? I am not sure if just printing the record is really helpful at here (considering users may often have long JSON records).
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