Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/21818#discussion_r203934987 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/sources/InsertSuite.scala --- @@ -486,6 +486,25 @@ class InsertSuite extends DataSourceTest with SharedSQLContext { } } } + test("SPARK-24860: dynamic partition overwrite specified per source without catalog table") { + withTempPath { path => + Seq((1, 1, 1)).toDF("i", "part1", "part2") --- End diff -- can we simplify the test? ideally we only need one partition column, and write some initial data to the table. then do an overwrite with partitionOverwriteMode=dynamic, and another overwrite with partitionOverwriteMode=static.
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