Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/20214#discussion_r160613124
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
---
@@ -1255,6 +1255,34 @@ class DataFrameSuite extends QueryTest with
SharedSQLContext {
assert(testData.select($"*").showString(1, vertical = true) ===
expectedAnswer)
}
+ test("SPARK-XXXXX Cast rows to strings in showString") {
--- End diff --
nit: need to update jira id.
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