Notebooks — time_travel-nyc_taxi-spark-iceberg¶

Auto-extracted from jupyter/notebook.ipynb and zeppelin/notebook.zpln. Both notebooks implement identical logic in PySpark and Scala.

1. Section map¶

Subsection	Scala (Zeppelin)	PySpark (Jupyter)
2.1 Setup	✓	✓
2.2 Read	✓	✓
2.3 Transform	✓	✓
2.4 Write	✓	✓
2.5 Verify	✓	✓

2. Walkthrough¶

2.1 Setup¶

Scala (Zeppelin):

import spark.implicits._
import org.apache.spark.sql.functions._
// spark pre-bound (Spark Connect + lakehouse catalog)

PySpark (Jupyter):

from pyspark.sql import SparkSession

spark = SparkSession.builder.remote("sc://spark-connect:15002").getOrCreate()

2.2 Read¶

Scala (Zeppelin):

spark.sql("CREATE TABLE IF NOT EXISTS lakehouse.silver.nyc_taxi_tt AS SELECT * FROM lakehouse.bronze.nyc_taxi_trips").show(false)

PySpark (Jupyter):

spark.sql("CREATE TABLE IF NOT EXISTS lakehouse.silver.nyc_taxi_tt AS SELECT * FROM lakehouse.bronze.nyc_taxi_trips").show(truncate=False)

2.3 Transform¶

Scala (Zeppelin):

spark.sql("INSERT INTO lakehouse.silver.nyc_taxi_tt SELECT * FROM lakehouse.bronze.nyc_taxi_trips WHERE passenger_count > 3").show(false)

PySpark (Jupyter):

spark.sql("INSERT INTO lakehouse.silver.nyc_taxi_tt SELECT * FROM lakehouse.bronze.nyc_taxi_trips WHERE passenger_count > 3").show(truncate=False)

2.4 Write¶

Scala (Zeppelin):

spark.sql("ALTER TABLE lakehouse.silver.nyc_taxi_tt CREATE BRANCH IF NOT EXISTS audit").show(false)

PySpark (Jupyter):

spark.sql("ALTER TABLE lakehouse.silver.nyc_taxi_tt CREATE BRANCH IF NOT EXISTS audit").show(truncate=False)

2.5 Verify¶

Scala (Zeppelin):

spark.sql("SELECT committed_at, snapshot_id FROM lakehouse.silver.nyc_taxi_tt.history ORDER BY committed_at").show(false)
// time-travel: spark.sql("SELECT count(*) FROM lakehouse.silver.nyc_taxi_tt VERSION AS OF <snapshot_id>").show()
// rollback:    spark.sql("CALL lakehouse.system.rollback_to_snapshot('lakehouse.silver.nyc_taxi_tt', <snapshot_id>)").show()

PySpark (Jupyter):

spark.sql("SELECT committed_at, snapshot_id FROM lakehouse.silver.nyc_taxi_tt.history ORDER BY committed_at").show(truncate=False)
# time-travel: spark.sql("SELECT count(*) FROM lakehouse.silver.nyc_taxi_tt VERSION AS OF <snapshot_id>").show()
# rollback:    spark.sql("CALL lakehouse.system.rollback_to_snapshot('lakehouse.silver.nyc_taxi_tt', <snapshot_id>)").show()

3. Scala / PySpark parity¶

Both notebooks share the same numbered sections and produce identical Iceberg tables; only the language and interpreter differ.

4. How to run¶

Open the scenario's zeppelin/notebook.zpln on the Atlas Zeppelin UI or jupyter/notebook.ipynb on JupyterHub, then run all paragraphs/cells top to bottom.