Github user gengliangwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/22895#discussion_r229553381
--- Diff:
external/avro/src/main/scala/org/apache/spark/sql/avro/AvroDataToCatalyst.scala
---
@@ -100,9 +100,14 @@ case class AvroDataToCatalyst(
case NonFatal(e) => parseMode match {
case PermissiveMode => nullResultRow
case FailFastMode =>
- throw new SparkException("Malformed records are detected in
record parsing. " +
+ val msg = if (e.getMessage != null) {
+ e.getMessage + "\n"
+ } else {
+ ""
+ }
+ throw new SparkException(msg + "Malformed records are detected
in record parsing. " +
s"Current parse Mode: ${FailFastMode.name}. To process
malformed records as null " +
- "result, try setting the option 'mode' as 'PERMISSIVE'.",
e.getCause)
+ "result, try setting the option 'mode' as 'PERMISSIVE'.", e)
--- End diff --
After the change, the backtrace will contain:
```
Caused by: org.apache.spark.sql.catalyst.util.BadRecordException:
com.fasterxml.jackson.core.JsonParseException: Unexpected character ('1' (code
49)): was expecting a colon to separate field name and value
at [Source: (InputStreamReader); line: 1, column: 7]
at
org.apache.spark.sql.catalyst.json.JacksonParser.parse(JacksonParser.scala:414)
at
org.apache.spark.sql.catalyst.expressions.JsonToStructs$$anonfun$parser$1.apply(jsonExpressions.scala:581)
at
org.apache.spark.sql.catalyst.expressions.JsonToStructs$$anonfun$parser$1.apply(jsonExpressions.scala:581)
at
org.apache.spark.sql.catalyst.util.FailureSafeParser.parse(FailureSafeParser.scala:66)
... 20 more
```
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