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    Onehouse Blog

    onehouse.ai · Company blog · on HN since 2023

    Onehouse, a data lakehouse company built by the team behind Apache Hudi, writes about table formats, catalogs, and analytics engine benchmarks.

    Visit blogHN submissions
    DatabasesData & VisualizationDevOps & Cloud
    What HN says

    Commenters call its Hudi vs Delta Lake vs Iceberg comparison the best reference for the three formats, though one suspects the source has a competitor's bias.

    Stats for nerds
    21HN people shared it
    16linked in comments
    64story points
    Oct 2025last shared
    2023people per year2025

    Top posts on HN

    1. 1
      Onetable Interop Layer for Apache Hudi, Delta Lake and Apache Iceberg
      2 people · 13 points · first shared 2023 · 1 comments on HN
    2. 2
      ClickHouse vs. StarRocks vs. Presto vs. Trino vs. Apache Spark
      4 people · 11 points · first shared 2025 · 2 comments on HN
    3. 3
      Comprehensive Data Catalog Comparison
      2 people · 8 points · first shared 2024 · 3 comments on HN
    4. 4
      Cloud Warehouse/Lakehouse ETL Benchmarking Across EMR, Snowflake, Databricks
      1 person · 8 points · first shared 2025 · 2 comments on HN
    5. 5
      Apache Hudi vs. Delta Lake vs. Apache Iceberg Lakehouse Feature Comparison
      4 people · 6 points · first shared 2023 · Discussion on HN
    6. 6
      Interoperable Lakehouse: Difference Between Onetable and UniForm
      1 person · 6 points · first shared 2023 · Discussion on HN
    7. 7
      A new DB for Iceberg/Hudi because low-latency serving on a lake is impractical
      1 person · 4 points · first shared 2026 · Discussion on HN
    8. 8
      Open Table Formats and the Open Data Lakehouse, in Perspective
      2 people · 3 points · first shared 2025 · Discussion on HN
    9. 9
      Has the lakehouse battle shifted from table formats to catalogs?
      2 people · 2 points · first shared 2026 · Discussion on HN
    10. 10
      Inflated data lakehouse costs and latencies? – Blame S3's choice of HTTP/1.1
      1 person · 2 points · first shared 2026 · Discussion on HN

    What HN people wrote when they linked it

    • cosmicgadgetApr 2025

      What If We Could Rebuild Kafka From Scratch? - Gunnar Morling (https://news.ycombinator.com/item?id=43790420)

      1. Five Advantages of Log-Based Change Data Capture (https://debezium.io/blog/2018/07/19/advantages-of-log-based-change-data-capture/)

      2. Why Data Architecture Should Guide Your Query Engine Decision (https://www.onehouse.ai/blog/why-data-architecture-should-guide-your-query-engine-decision)

      3. Reimagine Apache Kafka (https://streamnative.io/blog/ursa-reimagine-apache-kafka-for-the-cost-conscious-data-streaming)

      4. Book Review: Designing Data-Intensive Applications | Henrik Warne's blog (https://henrikwarne.com/2019/07/27/book-review-designing-data-intensive-applications/)

      5. Of Streams and Tables in Kafka and Stream Processing, Part 1 (https://www.michael-noll.com/blog/2018/04/05/of-stream-and-tables-in-kafka-and-stream-processing-part1/)

    • sla99Jan 2023

      It looks like the benchmarks used the latest versions of Delta and Iceberg, but chose a version of Hudi that is over 6 months old. Hudi v0.12.2 is much more advanced than v0.12.0 which the benchmark did not consider. As the Databricks CIDR paper states, and as mentioned in the Onehouse article, Hudi by default is optimized for UPSERTs vs INSERTs and is a 1-line config change that is appropriate for a true apples-apples comparison. See both: https://www.onehouse.ai/blog/apache-hudi-vs-delta-lake-transparent-tpc-ds-lakehouse-performance-benchmarks and https://github.com/brooklyn-data/delta/pull/2

    • joeharris76Jan 2023

      "A grand don't come for free"

      It's interesting that they link to (and show graphs from) their earlier post but fail to mention that they had to disable a very large chunk of the features in the checklist to get that performance.

      Their earlier post: https://www.onehouse.ai/blog/apache-hudi-vs-delta-lake-transparent-tpc-ds-lakehouse-performance-benchmarks
      Responding to: https://databeans-blogs.medium.com/delta-vs-iceberg-vs-hudi-reassessing-performance-cb8157005eb0

    • jamesblondeOct 2025

      Here's a good performance study by OneHouse comparing Clickhouse, StarRocks, Trino:

      https://www.onehouse.ai/blog/apache-spark-vs-clickhouse-vs-presto-vs-starrocks-vs-trino-comparing-analytics-engines

      Druid is real-time analytics, similar to Clickhouse. StarRocks is best at Joins - Clickhouse is not good for joins.

    • rdeggesJan 2025

      OneHouse also has a fantastic iceberg implementation (they're the team behind Apache Hudi) and does a ton of great interop work: https://www.onehouse.ai/blog/comprehensive-data-catalog-comparison && https://www.onehouse.ai/blog/open-data-foundations-with-apache-xtable-hudi-delta-and-iceberg-interoperability

    • sivabalanJun 2023

      Interesting to see they took inspiration from Onehouse on the unified table format Ref dated Feb, 2023: https://www.onehouse.ai/blog/onetable-hudi-delta-iceberg
      And another big player (SF) is also starting to support additional table formats.

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