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https://issues.apache.org/jira/browse/SPARK-22825?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wenchen Fan resolved SPARK-22825.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.3.0
Issue resolved by pull request 20024
[https://github.com/apache/spark/pull/20024]
> Incorrect results of Casting Array to String
> --------------------------------------------
>
> Key: SPARK-22825
> URL: https://issues.apache.org/jira/browse/SPARK-22825
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.1
> Reporter: Xiao Li
> Assignee: Takeshi Yamamuro
> Fix For: 2.3.0
>
>
> {code}
> val df =
> spark.range(10).select('id.cast("integer")).agg(collect_list('id).as('ids))
> df.write.saveAsTable("t")
> sql("SELECT cast(ids as String) FROM t").show(false)
> {code}
> The output is like
> {code}
> +------------------------------------------------------------------+
> |ids |
> +------------------------------------------------------------------+
> |org.apache.spark.sql.catalyst.expressions.UnsafeArrayData@8bc285df|
> +------------------------------------------------------------------+
> {code}
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