Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/8035#discussion_r36575436
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/json/JSONRelation.scala ---
@@ -105,6 +107,15 @@ private[sql] class JSONRelation(
jsonSchema
}
+ override private[sql] def buildScan(
+ requiredColumns: Array[String],
+ filters: Array[Filter],
+ inputPaths: Array[String],
+ broadcastedConf: Broadcast[SerializableConfiguration]): RDD[Row] = {
+ refresh()
--- End diff --
`inputPaths` contains the "base" input paths, while the `inputPaths` of the
other `buildScan` method in `JSONRelation` contains `FileStatus`es of leaf
files under base input paths, which is retrieved from the `FileStatusCache` in
`HadoopFsRelation`.
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