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https://issues.apache.org/jira/browse/SPARK-21691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16139656#comment-16139656
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Fei Shao commented on SPARK-21691:
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[~aokolnychyi]
About the
*"override def output: Seq[Attribute] = if (resolved)
projectList.map(_.toAttribute) else Nil"*
, which file shall I put it to please?
I put it to the "case class UnresolvedRelation(tableIdentifier:
TableIdentifier) extends LeafNode ", I can't compile it.
Because the projectList is not recognized by compiler.
My code is version 2.2.0.
> Accessing canonicalized plan for query with limit throws exception
> ------------------------------------------------------------------
>
> Key: SPARK-21691
> URL: https://issues.apache.org/jira/browse/SPARK-21691
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Bjoern Toldbod
>
> Accessing the logical, canonicalized plan fails for queries with limits.
> The following demonstrates the issue:
> {code:java}
> val session = SparkSession.builder.master("local").getOrCreate()
> // This works
> session.sql("select * from (values 0,
> 1)").queryExecution.logical.canonicalized
> // This fails
> session.sql("select * from (values 0, 1) limit
> 1").queryExecution.logical.canonicalized
> {code}
> The message in the thrown exception is somewhat confusing (or at least not
> directly related to the limit):
> "Invalid call to toAttribute on unresolved object, tree: *"
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