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Posted to issues@spark.apache.org by "Takeshi Yamamuro (JIRA)" <ji...@apache.org> on 2018/01/05 15:36:01 UTC

[jira] [Created] (SPARK-22973) Incorrect results of casting Map to String

Takeshi Yamamuro created SPARK-22973:
----------------------------------------

             Summary: Incorrect results of casting Map to String
                 Key: SPARK-22973
                 URL: https://issues.apache.org/jira/browse/SPARK-22973
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.2.1
            Reporter: Takeshi Yamamuro


{code}
scala> Seq(Map(1 -> "a", 2 -> "b")).toDF("a").write.saveAsTable("t")
scala> sql("SELECT cast(a as String) FROM t").show(false)
+----------------------------------------------------------------+
|a                                                               |
+----------------------------------------------------------------+
|org.apache.spark.sql.catalyst.expressions.UnsafeMapData@38bdd75d|
+----------------------------------------------------------------+
{code}



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