Bjoern Toldbod created SPARK-21691:
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Summary: 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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