--- title: Debugging Apache Iceberg: A Production Guide | daily.dev description: A comprehensive production debugging guide for Apache Iceberg covering two approaches: using an observability control plane (LakeOps) and manual metadata... canonical: https://daily.dev/posts/debugging-apache-iceberg-a-production-guide-zyux3vjzn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Debugging Apache Iceberg: A Production Guide | daily.dev og:description: A comprehensive production debugging guide for Apache Iceberg covering two approaches: using an observability control plane (LakeOps) and manual metadata... og:url: https://daily.dev/posts/debugging-apache-iceberg-a-production-guide-zyux3vjzn og:image: https://api.daily.dev/og/posts/ZyuX3vJZn.png og:image:alt: Debugging Apache Iceberg: A Production Guide 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. # Debugging Apache Iceberg: A Production Guide **[ITNEXT](https://daily.dev/sources/itnext)** · 32 min read · 0 upvotes · 0 comments ## Summary A comprehensive production debugging guide for Apache Iceberg covering two approaches: using an observability control plane (LakeOps) and manual metadata queries. Covers the most common failure modes including small file explosions, manifest fragmentation, CommitFailedException storms, orphan file storage bloat, compaction OOMs, time travel failures, merge-on-read read amplification, schema evolution issues, and wrong results. Provides concrete SQL diagnostic queries, immediate fixes with Spark stored procedure calls, prevention strategies, and the critical safe maintenance sequence: expire snapshots → remove orphans → compact data files → rewrite manifests → refresh statistics. Also addresses writer-side configuration debt (checkpoint intervals, write distribution mode, partition grain) as a root cause of recurring incidents. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Maintaining Apache Iceberg Tables: Compaction, Snapshots, Metadata and Orphan Files](https://daily.dev/posts/maintaining-apache-iceberg-tables-compaction-snapshots-metadata-and-orphan-files-vk7yjrfyp) · ITNEXT · 0 upvotes · 0 comments - [Apache Iceberg Compaction Best Practices](https://daily.dev/posts/apache-iceberg-compaction-best-practices-60tdqenf7) · ITNEXT · 7 upvotes · 0 comments - [Iceberg Lake for Data Analytics: Optimization Guide](https://daily.dev/posts/iceberg-lake-for-data-analytics-optimization-guide-kmewy4cgp) · ITNEXT · 1 upvotes · 0 comments - [Managed Iceberg Lakehouse: A Practical Guide](https://daily.dev/posts/managed-iceberg-lakehouse-a-practical-guide-qdlvpntka) · ITNEXT · 1 upvotes · 0 comments - [Apache Iceberg Architecture Deep Dive](https://daily.dev/posts/apache-iceberg-architecture-deep-dive-1znwuwiy4) · BigData Boutique blog · 5 upvotes · 0 comments --- Tags: [#data-lake](https://daily.dev/tags/data-lake), [#apache-iceberg](https://daily.dev/tags/apache-iceberg) [View this post on daily.dev](https://daily.dev/posts/debugging-apache-iceberg-a-production-guide-zyux3vjzn) ```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":"Debugging Apache Iceberg: A Production Guide","url":"https://daily.dev/posts/debugging-apache-iceberg-a-production-guide-zyux3vjzn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/debugging-apache-iceberg-a-production-guide-zyux3vjzn"},"datePublished":"2026-07-19T17:19:58.097Z","dateModified":"2026-07-19T17:20:23.400Z","description":"A comprehensive production debugging guide for Apache Iceberg covering two approaches: using an observability control plane (LakeOps) and manual metadata...","image":"https://media.daily.dev/image/upload/s--2-1xRawN--/f_auto/v1722860399/public/Placeholder%2011","thumbnailUrl":"https://media.daily.dev/image/upload/s--2-1xRawN--/f_auto/v1722860399/public/Placeholder%2011","isAccessibleForFree":true,"articleSection":"ITNEXT","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":"ITNEXT","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/itnext2","url":"https://daily.dev/sources/itnext"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/debugging-apache-iceberg-a-production-guide-zyux3vjzn","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"data-lake,apache-iceberg","timeRequired":"PT32M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ITNEXT","item":"https://daily.dev/sources/itnext"},{"@type":"ListItem","position":3,"name":"Debugging Apache Iceberg: A Production Guide"}]} ```