westonpace commented on a change in pull request #9561:
URL: https://github.com/apache/arrow/pull/9561#discussion_r583987579
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File path: r/R/dataset-partition.R
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@@ -72,19 +77,22 @@ HivePartitioning$create <- dataset___HivePartitioning
#' Because fields are named in the path segments, order of fields passed to
#' `hive_partition()` does not matter.
#' @param ... named list of [data types][data-type], passed to [schema()]
+#' @param null_fallback character to be used in place of `NA` and `NULL` values
+#' in columns that are being partitioned by. (default:
+#' `"__HIVE_DEFAULT_PARTITION__"`)
Review comment:
I think that is probably opening a can of worms. If you're within the
spark execution context then you're probably using spark to read/write parquet.
If you're outside the spark execution context then those configuration
variables are probably not set/present/available.
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