Add a Unique ID Column to a Spark DataFrame

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.

sdf_with_unique_id(x, id = "id")

Arguments

x

A spark_connection, ml_pipeline, or a tbl_spark.

id

The name of the column to host the generated IDs.