Problemsby GlyphApache Iceberg
Open source project45 problems131 posts+2 this week
Problem posts per week
Apache Iceberg problems
GitHub tables suffer from small files and skew
5 posts from 5 people on GitHub issues.
Google Cloud users keep asking for help
Top post: "Validate `Service.status.conditions` like other `metav1.Condition` lists (start with warnings)", one of 30 posts from 28 people on Reddit, GitHub issues, Community forums.
ML experiments are hard to reproduce and track
17 posts from 15 people on GitHub issues, Reddit, Hacker News.
Migrating to or off GitHub is slow and risky
11 posts from 11 people on GitHub issues, Hacker News.
Apache Iceberg users keep filing bugs
Top post: "ORC: Writer accepts an empty struct that reader cannot bind", one of 11 posts from 10 people on GitHub issues, Reddit.
CI builds are slow and tests are flaky
10 posts from 10 people on GitHub issues, Community forums, Mastodon.
Claude Code tables suffer from small files and skew
9 posts from 9 people on GitHub issues, Reddit.
Hard to trace lineage and find trusted data in GitHub
7 posts from 7 people on GitHub issues, Reddit.
AWS Glue users keep filing bugs
Top post: "Which AWS Glue Schema Registry JAR dependencies are required for Confluent S3 Sink Connector on AWS MSK?", one of 4 posts from 4 people on GitHub issues, Stack Overflow.
BigQuery users keep asking for help
Top post: "buildable indirect selection drops every test that reads a seed outside the selection", one of 14 posts from 14 people on GitHub issues, Stack Overflow, Reddit.
Trouble with Apache Iceberg table
Top post: "Parquet files written with the default CRS are not compatible with Iceberg Java EPSG:4326 table", one of 12 posts from 8 people on GitHub issues.
Apache Kafka users keep asking for help
Top post: "How to reference a file inside the current jar to be loaded in a library", one of 11 posts from 11 people on Stack Overflow, GitHub issues, Reddit.
Trouble with Apache Iceberg spark
Top post: "Spark: WAP snapshot isolation broken for format-version 3 tables when deletion vectors are used (spark.wap.id)", one of 7 posts from 7 people on GitHub issues.
Delta Lake users keep filing bugs
Top post: "version.sbt should be updated since 4.4.0 is out", one of 6 posts from 6 people on GitHub issues.
Apache Iceberg upgrades break working setups
6 posts from 5 people on GitHub issues.
Apache Flink users keep filing bugs
Top post: "Clarify that write.*.isolation-level properties do not apply to append/INSERT", one of 5 posts from 5 people on GitHub issues, Reddit, Stack Overflow.
Debugging orchestration and DAG failures is hard
5 posts from 5 people on GitHub issues.
Trouble with Apache Iceberg rest
Top post: "Core: Negative delete-file-references in REST scan response cause IndexOutOfBoundsException", one of 4 posts from 3 people on Reddit, GitHub issues.
Apache Iceberg runs out of memory
4 posts from 3 people on GitHub issues.
Apache Iceberg schema changes break downstream pipelines
3 posts from 3 people on GitHub issues.
Trouble with Apache Iceberg tables
Top post: "Iceberg tables are much slower than MergeTree in the performance tests: subcolumns, sort order, join", one of 3 posts from 3 people on GitHub issues.
Bad data slips through Apache Iceberg unnoticed
3 posts from 3 people on GitHub issues.
Apache Flink upgrades break working setups
3 posts from 3 people on GitHub issues.
Trouble with Apache Iceberg delete
Top post: "Iceberg DROP PARTITION aborts or republishes parent delete counters after an overwrite snapshot", one of 3 posts from 3 people on GitHub issues.
Apache Iceberg connectors and syncs are fragile
3 posts from 3 people on GitHub issues.
Trouble with Apache Kafka connect
Top post: "Kafka connect runtime 1.12.0 Azure Blob writes silently hang due to netty-tcnative/netty-handler", one of 3 posts from 3 people on GitHub issues.
Apache Flink connectors and syncs are fragile
2 posts from 2 people on GitHub issues. Unverified.
Trouble with Apache Iceberg pruning
Top post: "API: Predicate evaluation and file pruning treat -0.0 and 0.0 as different values", one of 2 posts from 2 people on GitHub issues. Unverified.
Trouble with NVIDIA split
Top post: "Spark: Expose the effective split target size as a driver metric", one of 2 posts from 2 people on GitHub issues. Unverified.
Trouble with Claude Code branch
Top post: "Iceberg: create a branch", one of 2 posts from 2 people on GitHub issues. Unverified.
About
Problems here are about Apache Iceberg or name it. It is tracked from the product list on the Method page. Website: iceberg.apache.org.