Problemsby IbisApache Iceberg upgrades break working setups
Outages and change3 posts from 3 people3d active+22 posts in the last 7 days, 0 the 7 days before (rising)
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The posts behind it
3, newest firstEquality delete on a fixed column deletes almost nothing: StructLikeSet collapses to one key### Apache Iceberg version 1.12.0 (iceberg-spark-runtime-4.1_2.13, Spark 4.1.3) ### Query engine Spark (also affects any engine that loads equality deletes through `BaseDeleteLoader` with the generic Parquet reader) ### Please describe the bug An equality delete file keyed on a...apache/iceberg · Neuw842 repliesOpen ↗Local warehouse (`file://`): data files, manifests and `metadata.json` are never fsynced before the catalog commit; after a power loss the table cannot be loaded### Apache Iceberg version main (development) ### Query engine None ### Please describe the bug 🐞 With a local warehouse (`warehouse="file://..."`, `PyArrowFileIO` with `PyArrowLocalFileSystem`), PyIceberg writes every new file (Parquet data files, `*-m0.avro` manifests,...apache/iceberg · hanke5803 repliesOpen ↗INSERT into Iceberg table fails when two partition fields derive from one column...name as the spec partition field name Impact: Multi-granularity Iceberg partitioning is unusable for writes. `CREATE TABLE` succeeds and publishes metadata, so the table looks healthy until the first `INSERT`, which fails with an opaque `STD_EXCEPTION` carrying no...ClickHouse/ClickHouse · clickgapaiOpen ↗
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About this problem
Evidence
3 posts from 3 people in 2 places, about 1 a week over 32 days. Mostly on apache/iceberg, ClickHouse/ClickHouse. Tools named alongside: GitHub, ClickHouse, PostgreSQL, SQLite.
Frustration Frustration 2 of 3· Seen on GitHub issues
How it was grouped
Posts that state a pain and match the "breaking-changes" rule about Apache Iceberg. First post Sep 22, 2026, latest Oct 23, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method
The same problem elsewhere
Upgrades and new releases break working setupsGitHub upgrades break working setupsClaude Code upgrades break working setupsCodex upgrades break working setupsDuckDB upgrades break working setupsClaude upgrades break working setupsOpen WebUI upgrades break working setupsChatGPT upgrades break working setupsKubernetes upgrades break working setupsPolars upgrades break working setupsAnthropic upgrades break working setupsClickHouse upgrades break working setups
Other Apache Iceberg problems
Trouble with Apache Iceberg sparkApache Iceberg users keep filing bugsTrouble with Apache Iceberg tableApache Iceberg runs out of memoryTrouble with Apache Iceberg restTrouble with Apache Iceberg deleteApache Iceberg connectors and syncs are fragileApache Iceberg tables suffer from small files and skewTrouble with Apache Iceberg coreApache Iceberg schema changes break downstream pipelinesApache Iceberg deprecations force unplanned migrationsTrouble with Apache Iceberg rows
History
Apache Iceberg upgrades break working setups (3 posts)