Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/7696#discussion_r36157314
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/rules.scala
---
@@ -115,6 +116,17 @@ private[sql] case class PreWriteCheck(catalog:
Catalog) extends (LogicalPlan =>
// OK
}
+ // Get all input data source relations of the query.
+ val srcRelations = query.collect {
--- End diff --
Actually we can do that in another PR, as will check if the the overwritten
table is the same as the source table for the `HadoopFsRelation` based data
source.
This actually will break the json unit test if we don't change the code in
this PR.
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