Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/22954#discussion_r232167110
--- Diff: R/pkg/R/SQLContext.R ---
@@ -215,14 +278,16 @@ createDataFrame <- function(data, schema = NULL,
samplingRatio = 1.0,
}
if (is.null(schema) || (!inherits(schema, "structType") &&
is.null(names(schema)))) {
- row <- firstRDD(rdd)
+ if (is.null(firstRow)) {
+ firstRow <- firstRDD(rdd)
--- End diff --
I <3 4 digits!
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