Add a Unique ID Column to a Spark DataFrame
R/sdf_interface.R
sdf_with_unique_id
Description
Add a unique ID column to a Spark DataFrame. The Spark monotonicallyIncreasingId function is used to produce these and is guaranteed to produce unique, monotonically increasing ids; however, there is no guarantee that these IDs will be sequential. The table is persisted immediately after the column is generated, to ensure that the column is stable – otherwise, it can differ across new computations.
Usage
sdf_with_unique_id(x, id = "id") Arguments
| Arguments | Description |
|---|---|
| x | A spark_connection, ml_pipeline, or a tbl_spark. |
| id | The name of the column to host the generated IDs. |