Github user arunmahadevan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21222#discussion_r185981329
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/debug/package.scala ---
@@ -88,23 +100,62 @@ package object debug {
}
}
+ /**
+ * Get WholeStageCodegenExec subtrees and the codegen in a query plan
into one String
+ *
+ * @param query the streaming query for codegen
+ * @return single String containing all WholeStageCodegen subtrees and
corresponding codegen
+ */
+ def codegenString(query: StreamingQuery): String = {
+ val msg = query match {
+ case w: StreamExecution if w.lastExecution != null =>
--- End diff --
I think this can be rewritten as if `case w: StreamExecution => if
(w.lastExecution != null) ... else ...`
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