| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| from ballista import BallistaContext |
| from ballista import functions as f |
| |
| |
| ctx = BallistaContext( |
| "localhost", 50050, shuffle_partitions=16, batch_size=8192 |
| ) |
| df = ctx.read_parquet("yellow_tripdata_2021-01.parquet").aggregate( |
| [f.col("passenger_count")], [f.count_star()] |
| ) |
| df.show() |
