--- title: A Guide to Apache Paimon Java API | daily.dev description: A hands-on guide to using the Apache Paimon Java API for managing a data lakehouse. Covers setting up a catalog and table schema on HDFS storage, then walks... canonical: https://daily.dev/posts/a-guide-to-apache-paimon-java-api-4oyfpe4dd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A Guide to Apache Paimon Java API | daily.dev og:description: A hands-on guide to using the Apache Paimon Java API for managing a data lakehouse. Covers setting up a catalog and table schema on HDFS storage, then walks... og:url: https://daily.dev/posts/a-guide-to-apache-paimon-java-api-4oyfpe4dd og:image: https://api.daily.dev/og/posts/4oyfpe4dd.png og:image:alt: A Guide to Apache Paimon Java API og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A Guide to Apache Paimon Java API **[Baeldung](https://daily.dev/sources/baeldung)** · 9 min read · 0 upvotes · 0 comments ## Summary A hands-on guide to using the Apache Paimon Java API for managing a data lakehouse. Covers setting up a catalog and table schema on HDFS storage, then walks through all CRUD operations: batch inserts using BatchWriteBuilder and GenericRow, filtered queries with PredicateBuilder and column projection, updates via upsert-on-primary-key semantics, and deletes using RowKind.DELETE. Code examples use a metrics monitoring use case with a composite primary key schema. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#java](https://daily.dev/tags/java), [#big-data](https://daily.dev/tags/big-data), [#data-engineering](https://daily.dev/tags/data-engineering) [View this post on daily.dev](https://daily.dev/posts/a-guide-to-apache-paimon-java-api-4oyfpe4dd) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"A Guide to Apache Paimon Java API","url":"https://daily.dev/posts/a-guide-to-apache-paimon-java-api-4oyfpe4dd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-guide-to-apache-paimon-java-api-4oyfpe4dd"},"datePublished":"2026-06-29T02:46:44.376Z","dateModified":"2026-06-29T02:47:14.619Z","description":"A hands-on guide to using the Apache Paimon Java API for managing a data lakehouse. Covers setting up a catalog and table schema on HDFS storage, then walks...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f3936b726a3720f3151636207d7cddad?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f3936b726a3720f3151636207d7cddad?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Baeldung","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Baeldung","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/52cccfb454d946c4b7dfa5e816f9e576","url":"https://daily.dev/sources/baeldung"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/a-guide-to-apache-paimon-java-api-4oyfpe4dd","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java,big-data,data-engineering","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Baeldung","item":"https://daily.dev/sources/baeldung"},{"@type":"ListItem","position":3,"name":"A Guide to Apache Paimon Java API"}]} ```