Apache Iceberg connectors and syncs are fragile

Data engineering3 posts from 3 people3d active+00 posts in the last 7 days, 2 the 7 days before (fading)

Posts per day3 posts, Sep 4 to Oct 21

The posts behind it

3, newest first

GitHub issuesOct 13 Support reading encrypted Iceberg tables### Description Polars should support reading encrypted Apache Iceberg tables through `scan_iceberg`, including encryption of both table metadata and data files. This should use PyIceberg for scan planning and Polars' native Parquet reader for execution, preserving...pola-rs/polars · matthewbayer1 reactionsOpen ↗GitHub issuesOct 12 Iceberg v3 `INSERT` never assigns `first_row_id` to pre-upgrade manifests### Describe what's wrong - After an external v2 -> v3 upgrade, the first ClickHouse `INSERT` never assigns `first_row_id` to pre-upgrade manifests. - Trigger: table written in v2, upgraded to v3 by another engine, then ClickHouse makes the first commit with `INSERT`. - Expected...ClickHouse/ClickHouse · clickgapai2 repliesOpen ↗GitHub issuesSep 4 Iceberg integration with Spark's CDC### Feature Request / Improvement Spark 4.2 introduces native support for change data capture, functionality wise it is similar to Iceberg's create changelog view https://spark.apache.org/releases/spark-release-4-2-0.html#change-data-capture-spark-5566, It is good to support and...apache/iceberg · huan233usc1 repliesOpen ↗

Companies and products named

Named3 posts

Apache Iceberg Named1 post

Polars Named1 post

AWS Named1 post

ClickHouse Named1 post

GitHub

About this problem

Evidence

3 posts from 3 people in 3 places, about 1 a week over 40 days. Mostly on apache/iceberg, pola-rs/polars, ClickHouse/ClickHouse. Tools named alongside: Polars, AWS, ClickHouse, GitHub.

Frustration Frustration 0 of 3· Seen on GitHub issues

How it was grouped

Posts that state a pain and match the "ingestion" rule about Apache Iceberg. First post Sep 4, 2026, latest Oct 13, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method

The same problem elsewhere

Elsewhere5 postsIngestion connectors and CDC are fragile Elsewhere4 postsPostgreSQL connectors and syncs are fragile Elsewhere4 postsMySQL connectors and syncs are fragile

Other Apache Iceberg problems

Same product11 postsApache Iceberg users keep filing bugs Same product8 postsTrouble with Apache Iceberg table Same product5 postsTrouble with Apache Iceberg rest Same product4 postsApache Iceberg runs out of memory Same product3 postsTrouble with Apache Iceberg spark Same product2 postsTrouble with Apache Iceberg delete Same product2 postsApache Iceberg schema changes break downstream pipelines Same product2 postsApache Iceberg deprecations force unplanned migrations Same product1 postTrouble with Apache Iceberg rows Same product1 postTrouble with Apache Iceberg drop Same product1 postTrouble with Apache Iceberg scan

History

MomentumOct 20, 2026steady to fading

MomentumOct 19, 2026rising to steady

CorroborationOct 18, 2026unverified to corroborated

MomentumOct 18, 2026steady to rising

AddedOct 15, 2026Apache Iceberg connectors and syncs are fragile (2 posts)