https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-ai-restaurant-food-tech-2026-toast-ai-olo-presto-mcdonalds-ibm-domino-sweetgreen-infinite-kitchen-rebellyous-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-ai-restaurant-food-tech-2026-toast-ai-olo-presto-mcdonalds-ibm-domino-sweetgreen-infinite-kitchen-rebellyous-deep-dive.en In 2026 the restaurant industry has become a battleground for AI and robotics. We dive deep into Toast · Square · Olo POS stacks, Presto · Wendy's FreshAI · OpenAI Aramark voice ordering, Sweetgreen Infinite Kitchen · Chipotle Autocado · Bear Robotics Servi · Miso Flippy automated kitchens, Baemin AI Tastemaker · Yogiyo · Coupang Eats · Demae-can in Asia, and the Wendy's surge pricing backlash and McDonald's IBM drive-thru shutdown stories. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) ai-restaurantfood-techtoast-aioloprestomcdonalds-aidominossweetgreenchipotlebear-roboticsbaeminenglish https://www.youngju.dev/blog/culture/2026-05-16-ai-restaurant-food-tech-2026-toast-ai-olo-presto-mcdonalds-ibm-domino-sweetgreen-infinite-kitchen-rebellyous-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-ai-restaurant-food-tech-2026-toast-ai-olo-presto-mcdonalds-ibm-domino-sweetgreen-infinite-kitchen-rebellyous-deep-dive.ja 2026年の外食産業はAIとロボットの主戦場です。Toast · Square · Olo の POS スタック、Presto · Wendy's FreshAI · OpenAI Aramark の音声注文、Sweetgreen Infinite Kitchen · Chipotle Autocado · Bear Robotics Servi · Miso Flippy の自動化キッチン、배달의민족 (Baemin) AI 미식가 · 요기요 · 쿠팡이츠 · 出前館、Wendy's ダイナミックプライシング炎上事件と McDonald's IBM AI ドライブスルー終了事件まで、AI レストランスタックを徹底解説します。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) ai-restaurantfood-techtoast-aioloprestomcdonalds-aidominossweetgreenchipotlebear-roboticsbaemin日本語 https://www.youngju.dev/blog/culture/2026-05-16-ai-restaurant-food-tech-2026-toast-ai-olo-presto-mcdonalds-ibm-domino-sweetgreen-infinite-kitchen-rebellyous-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-ai-restaurant-food-tech-2026-toast-ai-olo-presto-mcdonalds-ibm-domino-sweetgreen-infinite-kitchen-rebellyous-deep-dive 2026년 외식업은 AI와 로봇의 격전지입니다. Toast · Square · Olo POS 스택, Presto · Wendy's FreshAI · OpenAI Aramark 보이스 주문, Sweetgreen Infinite Kitchen · Chipotle Autocado · Bear Robotics Servi · Miso Flippy 자동화 주방, 배달의민족 AI 미식가 · 요기요 · 쿠팡이츠 · 出前館, Wendy's 서지 프라이싱 백래시 · McDonald's IBM 드라이브-스루 종료 사건까지 AI 레스토랑 스택을 심층 분석합니다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) ai-restaurantfood-techtoast-aioloprestomcdonalds-aidominossweetgreenchipotlebear-roboticsbaemin https://www.youngju.dev/blog/culture/2026-05-16-data-lakehouse-modern-data-engineering-2026-iceberg-delta-hudi-paimon-tabular-databricks-trino-spark-4-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-data-lakehouse-modern-data-engineering-2026-iceberg-delta-hudi-paimon-tabular-databricks-trino-spark-4-deep-dive.en Data engineering in 2026 is no longer the era of "data warehouse vs data lake." Apache Iceberg emerged as the winner of the 2024-25 table format war — Netflix, Apple, LinkedIn, Stripe, Airbnb all converged on it. Databricks acquired Tabular (founded by Iceberg co-creator Ryan Blue) for over $1B in June 2024, bringing Delta Lake and Iceberg under one roof. Apache Hudi takes its own path through Onehouse, while Apache Paimon (born from the Flink team) defines a new category called "streaming lakehouse." For processing engines, Spark 4 (Spark Connect) and Flink 2 lead; for query engines, Trino, Presto, DuckDB, and ClickHouse share the field; for transformations, dbt is the standard; for catalogs, Unity Catalog, Polaris, and BigLake compete. This essay maps the 2026 lakehouse landscape — table formats, engines, catalogs, commercial services, plus Korean and Japanese case studies — in one sweep. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) data-engineeringdata-lakehouseapache-icebergdelta-lakeapache-hudiapache-paimontabulardatabrickssnowflakebigquerydbttrinoprestosparkflinkclickhouseduckdbapache-arrowapache-parquetapache-orcdatafusiononehouse2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-data-lakehouse-modern-data-engineering-2026-iceberg-delta-hudi-paimon-tabular-databricks-trino-spark-4-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-data-lakehouse-modern-data-engineering-2026-iceberg-delta-hudi-paimon-tabular-databricks-trino-spark-4-deep-dive.ja 2026年のデータエンジニアリングは、もはや「データウェアハウス対データレイク」の時代ではない。2024-25年のテーブルフォーマット戦争はApache Icebergの勝利に終わり、Netflix・Apple・LinkedIn・Stripe・Airbnbが揃ってその上に集まった。Databricksは2024年6月、Iceberg共同創設者Ryan BlueのTabularを10億ドル超で買収し、Delta LakeとIcebergを同じ屋根の下にまとめた。一方、Apache HudiはOnehouseという商用会社を通じて独自の道を歩み、Flinkチーム発のApache Paimonは「ストリーミング・レイクハウス」という新カテゴリを定義する。処理エンジンはSpark 4 (Spark Connect)とFlink 2、クエリエンジンはTrino・Presto・DuckDB・ClickHouse、変換はdbtが標準、カタログはUnity Catalog・Polaris・BigLakeが分担する。この記事では2026年のデータレイクハウスの全景を — テーブルフォーマット、エンジン、カタログ、商用サービス、日本・韓国の事例まで — 一気に整理する。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) data-engineeringdata-lakehouseapache-icebergdelta-lakeapache-hudiapache-paimontabulardatabrickssnowflakebigquerydbttrinoprestosparkflinkclickhouseduckdbapache-arrowapache-parquetapache-orcdatafusiononehouse2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-data-lakehouse-modern-data-engineering-2026-iceberg-delta-hudi-paimon-tabular-databricks-trino-spark-4-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-data-lakehouse-modern-data-engineering-2026-iceberg-delta-hudi-paimon-tabular-databricks-trino-spark-4-deep-dive 2026년의 데이터 엔지니어링은 더 이상 "데이터 웨어하우스 vs 데이터 레이크"의 시대가 아니다. Apache Iceberg가 2024-25년 테이블 포맷 전쟁의 승자로 떠오르면서 Netflix·Apple·LinkedIn·Stripe·Airbnb가 모두 그 위에 모였고, Databricks는 2024년 6월 Iceberg 공동 창시자 Ryan Blue의 Tabular를 $1B 이상으로 인수해 Delta Lake와 Iceberg를 한 지붕 아래로 끌어들였다. 한쪽에서는 Apache Hudi가 Onehouse라는 상용화 회사를 통해 자기 길을 가고, Flink 팀이 만든 Apache Paimon이 스트리밍 레이크하우스라는 새 카테고리를 정의한다. 처리 엔진은 Spark 4(Spark Connect)와 Flink 2가, 쿼리 엔진은 Trino·Presto·DuckDB·ClickHouse가, 변환은 dbt가, 카탈로그는 Unity Catalog·Polaris·BigLake가 나눠 들고 있다. 이 글은 2026년 데이터 레이크하우스의 풍경을 — 테이블 포맷, 엔진, 카탈로그, 상용 서비스, 한국·일본 사례까지 — 한 호흡으로 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) data-engineeringdata-lakehouseapache-icebergdelta-lakeapache-hudiapache-paimontabulardatabrickssnowflakebigquerydbttrinoprestosparkflinkclickhouseduckdbapache-arrowapache-parquetapache-orcdatafusiononehouse2026deep-dive https://www.youngju.dev/blog/culture/2026-05-16-hadoop-spark-flink-trino-iceberg-delta-lake-hudi-airflow-dbt-data-engineering-2026-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-hadoop-spark-flink-trino-iceberg-delta-lake-hudi-airflow-dbt-data-engineering-2026-deep-dive.en A complete look at the data engineering stack in May 2026. The truth behind the "Hadoop is dead" headline (HDFS is shrinking, but YARN and the lakehouse pattern survive), the conclusion of the Iceberg vs Delta Lake vs Hudi table format war, the current state of Spark 4.0 + Photon + Spark Connect, Flink SQL and CDC as streaming standards, Trino federated SQL, the dbt + Iceberg modern ELT stack, Airflow 3.0 / Dagster / Prefect / Mage / Kestra orchestration, the ClickHouse / DuckDB / Pinot / Druid analytics convergence, Snowflake / Databricks / BigQuery / Redshift warehouses, and real production cases from Korea and Japan — all in one piece. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) hadoopsparkflinktrinoprestoicebergdelta-lakehudiairflowdagsterdbtlakehousedata-engineeringbig-datakafka https://www.youngju.dev/blog/culture/2026-05-16-hadoop-spark-flink-trino-iceberg-delta-lake-hudi-airflow-dbt-data-engineering-2026-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-hadoop-spark-flink-trino-iceberg-delta-lake-hudi-airflow-dbt-data-engineering-2026-deep-dive.ja 2026年5月時点のデータエンジニアリングスタックを徹底解説する。「Hadoopは死んだ」という刺激的なヘッドラインの真実(HDFSは縮小しているが、YARNとレイクハウスパターンは生き残っている)、Iceberg vs Delta Lake vs Hudiのテーブルフォーマット戦争の決着、Spark 4.0 + Photon + Spark Connectの現在、Flink SQLとCDCによるストリーミング標準化、Trinoによるフェデレーテッドクエリ、dbt + Icebergモダン ELTスタック、Airflow 3.0 / Dagster / Prefect / Mage / Kestraのオーケストレーション、ClickHouse / DuckDB / Pinot / Druidの分析コンバージェンス、Snowflake / Databricks / BigQuery / Redshiftウェアハウス、そして韓国と日本の実運用事例まで、一本で整理する。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) hadoopsparkflinktrinoprestoicebergdelta-lakehudiairflowdagsterdbtlakehousedata-engineeringbig-datakafka https://www.youngju.dev/blog/culture/2026-05-16-hadoop-spark-flink-trino-iceberg-delta-lake-hudi-airflow-dbt-data-engineering-2026-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-hadoop-spark-flink-trino-iceberg-delta-lake-hudi-airflow-dbt-data-engineering-2026-deep-dive 2026년 5월 기준 데이터 엔지니어링 스택을 끝까지 본다. "Hadoop은 죽었다"는 자극적 헤드라인의 진실(HDFS는 줄어들지만 YARN과 레이크하우스 패턴은 살아남았다), Iceberg vs Delta Lake vs Hudi 테이블 포맷 전쟁의 결말, Spark 4.0 + Photon + Spark Connect의 현재, Flink SQL과 CDC의 스트리밍 표준화, Trino 페더레이션 SQL, dbt + Iceberg 모던 ELT 스택, Airflow 3.0 / Dagster / Prefect / Mage / Kestra 오케스트레이션, ClickHouse · DuckDB · Pinot · Druid 분석 컨버전스, Snowflake · Databricks · BigQuery · Redshift 웨어하우스, 그리고 한국과 일본의 실제 운영 사례까지 한 글에서 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) hadoopsparkflinktrinoprestoicebergdelta-lakehudiairflowdagsterdbtlakehousedata-engineeringbig-datakafka