Takeshi Yamamuro created SPARK-23023:
----------------------------------------
Summary: Incorrect results of printing Array/Map/Struct in
showString
Key: SPARK-23023
URL: https://issues.apache.org/jira/browse/SPARK-23023
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.1
Reporter: Takeshi Yamamuro
The current `Datset.showString` prints rows thru `RowEncoder` deserializers
like;
{code}
scala> Seq(Seq(Seq(1, 2), Seq(3), Seq(4, 5, 6))).toDF("a").show(false)
+------------------------------------------------------------+
|a |
+------------------------------------------------------------+
|[WrappedArray(1, 2), WrappedArray(3), WrappedArray(4, 5, 6)]|
+------------------------------------------------------------+
{code}
This result is incorrect because the correct one is;
{code}
scala> Seq(Seq(Seq(1, 2), Seq(3), Seq(4, 5, 6))).toDF("a").show(false)
+------------------------+
|a |
+------------------------+
|[[1, 2], [3], [4, 5, 6]]|
+------------------------+
{code}
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