Hi devs,
While reviewing the code in Catalyst for doing query parsing I found
that UnresolvedStar has this typo in the exception [1].
I do understand that it's a very trivial issue but I thought I'd write
a test for it as part of the change so I could improve my
understanding of the low-level bits and bytes of Catalyst.
scala> ds.select("hello.*")
org.apache.spark.sql.AnalysisException: cannot resolve 'hello.*' give
input columns '';
at
org.apache.spark.sql.catalyst.analysis.UnresolvedStar.expand(unresolved.scala:249)
What test in Spark is the closest proximity to the class that I could
extend to assert the exception's message? How to run the test? Is sbt
catalyst/testOnly [testName] enough?
Please guide. Thanks.
[1]
https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala#L249
Pozdrawiam,
Jacek Laskowski
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