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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