Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18865#discussion_r131808674
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/json/JsonFileFormat.scala
---
@@ -114,7 +114,16 @@ class JsonFileFormat extends TextBasedFileFormat with
DataSourceRegister {
}
(file: PartitionedFile) => {
- val parser = new JacksonParser(actualSchema, parsedOptions)
+ // SPARK-21610: when the `requiredSchema` only contains
`_corrupt_record`,
--- End diff --
I think there are two issues:
1. When required schema is empty. This is why the jenkins test fails. we're
working on fix it.
2. If `actualSchema` selects few columns. We noticed that. The column
`_corrupted_record` is different when the selected columns are different. But
correctly we treat it as a designed behavior. Not sure if this is an issue we
need to fix.
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