Github user scwf commented on a diff in the pull request:
https://github.com/apache/spark/pull/5247#discussion_r28397087
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala ---
@@ -139,11 +139,13 @@ class DataFrame private[sql](
@transient protected[sql] val logicalPlan: LogicalPlan =
queryExecution.logical match {
// For various commands (like DDL) and queries with side effects, we
force query optimization to
// happen right away to let these side effects take place eagerly.
- case _: Command |
- _: InsertIntoTable |
- _: CreateTableAsSelect[_] |
- _: CreateTableUsingAsSelect |
- _: WriteToFile =>
+ case _ : Command =>
+ queryExecution.sparkPlan.executeCollect()
+ queryExecution.analyzed
--- End diff --
This will leads to executed command twice when we do action operator on
dataframe, such as
`sql(s"CREATE DATABASE xxx").count()`
first execution is when constructing dataframe
second is to execute count.
So maybe we still need construct LocalRelation here?
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