Github user jmchung commented on the issue:
https://github.com/apache/spark/pull/18865
To @viirya and @gatorsmile, I made some modifications as follows:
1. move the check of `_corrupt_record` out of the function block to get
fast fail in driver instead of executor side.
2. `sparkContext.parallelize(data, 1)` to
`sparkContext.parallelize(Seq(data), 1)`; without `Seq` the data will be stored
with a char for each line.
3. `schema` is still required to load the json file in this test case.
Would it be that infer schema did not contain `_corrupt_record`?
BTW, the previous test case will get the following schema:
```
root
|-- _corrupt_record: string (nullable = true)
```
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