felixcheung commented on a change in pull request #24414: [SPARK-22044][SQL]
Add `cost` and `codegen` arguments to `explain`
URL: https://github.com/apache/spark/pull/24414#discussion_r277120841
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File path: R/pkg/R/DataFrame.R
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@@ -147,19 +155,16 @@ setMethod("schema",
#' sparkR.session()
#' path <- "path/to/file.json"
#' df <- read.json(path)
-#' explain(df, TRUE)
+#' explain(df)
+#' explain(df, extended = TRUE)
+#' explain(df, codegen = TRUE)
+#' explain(df, cost = TRUE)
#'}
#' @note explain since 1.4.0
setMethod("explain",
signature(x = "SparkDataFrame"),
- function(x, extended = FALSE) {
- queryExec <- callJMethod(x@sdf, "queryExecution")
- if (extended) {
- cat(callJMethod(queryExec, "toString"))
- } else {
- execPlan <- callJMethod(queryExec, "executedPlan")
- cat(callJMethod(execPlan, "toString"))
- }
+ function(x, extended = FALSE, codegen = FALSE, cost = FALSE) {
Review comment:
can you check / test `explain(df, TRUE)` if the same as `explain(df,
extended = TRUE)`
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