Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14034#discussion_r69499892
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala
---
@@ -46,6 +46,15 @@ trait CheckAnalysis extends PredicateHelper {
}).length > 1
}
+ private def checkLimitClause(limitExpr: Expression): Unit = {
+ val numRows = limitExpr.eval().asInstanceOf[Int]
--- End diff --
We do not support non-foldable limit clauses.
https://github.com/apache/spark/blob/d063898bebaaf4ec2aad24c3ac70aabdbf97a190/sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala#L67-L89
https://github.com/apache/spark/blob/d063898bebaaf4ec2aad24c3ac70aabdbf97a190/sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala#L398-L401
But,,, we do not issue an exception if users do it. Thus, the error we got
is strange:
```
assertion failed: No plan for GlobalLimit (_nondeterministic#203 > 0.2)
+- Project [key#11, value#12, rand(-1441968339187861415) AS
_nondeterministic#203]
+- LocalLimit (_nondeterministic#202 > 0.2)
+- Project [key#11, value#12, rand(-1308350387169017676) AS
_nondeterministic#202]
+- LogicalRDD [key#11, value#12]
java.lang.AssertionError: assertion failed: No plan for GlobalLimit
(_nondeterministic#203 > 0.2)
+- Project [key#11, value#12, rand(-1441968339187861415) AS
_nondeterministic#203]
+- LocalLimit (_nondeterministic#202 > 0.2)
+- Project [key#11, value#12, rand(-1308350387169017676) AS
_nondeterministic#202]
+- LogicalRDD [key#11, value#12]
```
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