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https://issues.apache.org/jira/browse/SPARK-18053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15676223#comment-15676223
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Apache Spark commented on SPARK-18053:
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User 'cloud-fan' has created a pull request for this issue:
https://github.com/apache/spark/pull/15929
> ARRAY equality is broken in Spark 2.0
> -------------------------------------
>
> Key: SPARK-18053
> URL: https://issues.apache.org/jira/browse/SPARK-18053
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0, 2.0.1
> Reporter: Cheng Lian
> Assignee: Wenchen Fan
> Labels: correctness
>
> The following Spark shell reproduces this issue:
> {code}
> case class Test(a: Seq[Int])
> Seq(Test(Seq(1))).toDF().createOrReplaceTempView("t")
> sql("SELECT a FROM t WHERE a = array(1)").show()
> // +---+
> // | a|
> // +---+
> // +---+
> sql("SELECT a FROM (SELECT array(1) AS a) x WHERE x.a = array(1)").show()
> // +---+
> // | a|
> // +---+
> // |[1]|
> // +---+
> {code}
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