auto-zorder 0.0.4

The project aims to remove the guesswork of selecting columns to be used in the ZORDER statement. It achieves this by analyzing the logged execution plan for each cluster provided and returns the top n columns that were used in filter/where clauses.

Installation

pip install in your Databricks Notebook

%pip install auto_zorder

Example Usage

Note: If the cluster log delivery has not been active for very long then you may not see any results.

Basic Usage

optimize_cmd = auto_zorder(

                    cluster_ids=['cluster_id_1', 'cluster_id_2'],

                    optimize_table='my_db.my_table'

                    )



print(optimize_cmd)

>>> 'OPTIMIZE my_db.my_table ZORDER BY (col1, col2, col3, col4, col5)'



# To run the OPTIMIZE Command

spark.sql(optimize_cmd)

Limit the Number of ZORDER columns

optimize_cmd = auto_zorder(

                    cluster_ids=['cluster_id_1', 'cluster_id_2'],

                    optimize_table='my_db.my_table',

                    number_of_cols=2

                    )



print(optimize_cmd)

>>> 'OPTIMIZE my_db.my_table ZORDER BY (col1, col2)'

Save auto zorder analysis

optimize_cmd = auto_zorder(

                    cluster_ids=['cluster_id_1'],

                    optimize_table='my_db.my_table',

                    save_analysis='my_db.my_analysis'

                    )

Run auto zorder using analysis instead of cluster logs

optimize_cmd = auto_zorder(

                    use_analysis='my_db.my_analysis',

                    optimize_table='my_db.my_table'

                    )

Include additional columns and location in ZORDER

optimize_cmd = auto_zorder(

                    cluster_ids=['cluster_id_1', 'cluster_id_2'],

                    optimize_table='my_db.my_table',

                    use_add_cols=[('add_col1', 0), ('add_col2', 4)]

                    )



print(optimize_cmd)

>>> 'OPTIMIZE my_db.my_table ZORDER BY (add_col1, auto_col1, auto_col2, auto_col3, add_col2, auto_col4, auto_col5)'