Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/20464#discussion_r165570529 --- Diff: docs/sparkr.md --- @@ -663,3 +663,7 @@ You can inspect the search path in R with [`search()`](https://stat.ethz.ch/R-ma - The `stringsAsFactors` parameter was previously ignored with `collect`, for example, in `collect(createDataFrame(iris), stringsAsFactors = TRUE))`. It has been corrected. - For `summary`, option for statistics to compute has been added. Its output is changed from that from `describe`. - A warning can be raised if versions of SparkR package and the Spark JVM do not match. + +## Upgrading to Spark 2.4.0 + + - The first parameter of `substr` method was wrongly subtracted by one, previously. This can lead to inconsistent substring results and also does not match with the behaviour with `substr` in R. It has been corrected. --- End diff -- instead of `The first parameter of ` -> `The ``start`` parameter of...`
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