Data and AI struggles

1,787 problems · 347 companies

MLOps

Experiments on ClickHouse are hard to reproduce and track

8 posts from 1 person8d activeFading, +0 this weekunverified

Posts per day

Posts per day8 posts, Sep 21 to Nov 11

The posts behind it

GitHub issuesClickHouse/ClickHouse · clickgapaiNov 1

JSONExtract into JSON type ignores json_type_escape_dots_in_keys

### Describe what's wrong - With `json_type_escape_dots_in_keys = 1`, `JSONExtract( , 'JSON')` still splits dotted keys into nested paths, unlike `CAST( , 'JSON')`. - `'{"a.b":1}'` becomes `{"a":{"b":1}}` with path `a.b` instead of staying `{"a.b":1}` with path `a%2Eb`. - Input...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 26

`load_parts` destroyed before the pool joins its jobs: stack-use-after-scope

### Describe what's wrong - A cold statistics load with `max_threads > 1` reads the destroyed `load_parts` lambda from a `LoadStatistics` worker thread. - Triggered when `scheduleOrThrowOnError` throws `CANNOT_SCHEDULE_TASK` for any loader job after the first. - Queries should...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 24

system.stack_trace query stops at first thread_id block with no match

### Describe what's wrong - Filtering `system.stack_trace` by `thread_id` can return no row or a partial count even though the thread exists. - Happens when `max_block_size` is smaller than the number of threads enumerated before the matching one, e.g. `max_block_size = 1`. -...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 15

vectorscan 5.4.13 rejects `[` and `&&` inside classes in `multiMatch*` patterns

### Describe what's wrong - `multi[Fuzzy]Match*` functions throw `BAD_ARGUMENTS` for patterns with an unescaped `[` or `&&` inside a bracket expression. - Trigger: patterns like `[[]`, `[^[]`, `[][]` or `[a&&b]` passed to any of the six `multiMatch*`/`multiFuzzyMatch*`...

1 replies
GitHub issuesClickHouse/ClickHouse · clickgapaiOct 6

Auto parallel replicas throws LOGICAL_ERROR on JOIN rewritten to IN

### Describe what's wrong - With `automatic_parallel_replicas_mode = 1` and `query_plan_convert_join_to_in = 1`, an `INNER JOIN` returns correct results once, then fails on every later run. - The second run picks the parallel replicas plan once statistics are cached, triggering...

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 23

failpoints_disabled_in_tests check wrongly exempts no-parallel-replicas tests

### Describe what's wrong - The new check_failpoints_are_disabled check fails to flag tests that run in parallel but disable all fail points. - Triggered by any test tagged `no-parallel-replicas` without `no-parallel`, using `SYSTEM DISABLE ALL FAILPOINTS` as cleanup. - Such...

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 22

Empty `\Q\E` absorbs a quantifier: `replaceRegexpAll` still becomes `...One`

### Describe what's wrong - `replaceRegexpAll`/`regexp_replace` drop the trailing replacement when the pattern ends with an empty `\Q\E` before a quantifier and ` Experiments on ClickHouse are hard to reproduce and track

. - Triggered at default settings with `optimize_rewrite_regexp_functions = 1`, e.g. pattern `o\Q\E* Experiments on ClickHouse are hard to reproduce and track
on `'foo'`....

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 21

uniqTheta: 5-byte state blob allocates 1 GiB, unrefused by max_memory_usage

### Describe what's wrong - Deserializing a crafted `uniqTheta` state allocates and zeroes 1 GiB of memory before validating the payload. - Triggered by casting a 5-byte hex literal to `AggregateFunction(uniqTheta, UInt64)` and calling `finalizeAggregation`. - Expected an...

Companies and products named

8 posts
7 posts
About this problem

Evidence

8 posts from 1 person in 1 place, about 1 a week over 42 days. Mostly on ClickHouse/ClickHouse. Tools named alongside: GitHub.

Frustration Frustration 1 of 3· Seen on GitHub issues

How it was grouped

Posts that state a pain and match the "ml-reproducibility" rule about ClickHouse. First post Sep 21, 2026, latest Nov 1, 2026. Unverified: fewer than 3 posts, or one person or place only. Method

The same problem elsewhere

ML experiments are hard to reproduce and track

18 posts from 16 people on GitHub issues, Reddit, Hacker News.

Experiments on DuckDB are hard to reproduce and track

10 posts from 6 people on GitHub issues.

Experiments on Codex are hard to reproduce and track

4 posts from 3 people on GitHub issues.

Experiments on LlamaIndex are hard to reproduce and track

3 posts from 3 people on GitHub issues.

Experiments on MLflow are hard to reproduce and track

3 posts from 3 people on GitHub issues.

Experiments on GitHub are hard to reproduce and track

3 posts from 3 people on GitHub issues, Reddit.

Experiments on llama.cpp are hard to reproduce and track

2 posts from 2 people on GitHub issues. Unverified.

Experiments on OpenAI are hard to reproduce and track

2 posts from 2 people on GitHub issues. Unverified.

Experiments on Apache Superset are hard to reproduce and track

2 posts from 1 person on GitHub issues. Unverified.

Other ClickHouse problems

ClickHouse upgrades break working setups

31 posts from 20 people on GitHub issues.

ClickHouse users keep filing bugs

Top post: "Tighten seccomp policy for optional kernel interfaces", one of 19 posts from 8 people on GitHub issues.

Trouble with ClickHouse column

Top post: "MaterializedPostgreSQL: reading a Nullable column's .null subcolumn (x IS NULL, count(x)) fails with", one of 15 posts from 9 people on GitHub issues.

ClickHouse costs outgrow the value it gives

11 posts from 3 people on GitHub issues.

Trouble with ClickHouse table

Top post: "`SYSTEM RESTORE REPLICA` on a second replica over-bumps the table `metadata` znode version; every later", one of 8 posts from 5 people on GitHub issues.

Trouble with ClickHouse tables

Top post: "Paimon: resolve columns by field id, so tables with renamed or re-added columns are readable", one of 7 posts from 6 people on GitHub issues.

Trouble with ClickHouse join

Top post: "Explicit grace_hash now spills at max_bytes_ratio_before_external_join = 0.5 although the build side fits in", one of 5 posts from 4 people on GitHub issues.

ClickHouse error messages are cryptic

5 posts from 3 people on GitHub issues.

Trouble with ClickHouse read

Top post: "ORC: a corrupt PostScript `metadata_length` makes ORC predicate pushdown read `stripe_stats` out of bounds,", one of 4 posts from 4 people on GitHub issues.

Trouble with ClickHouse database

Top post: "`DROP NAMED COLLECTION` succeeds while a database uses the collection, and the server then fails to start", one of 4 posts from 2 people on GitHub issues.

Trouble with ClickHouse query

Top post: "Memory tracker counts jemalloc's freed pages as used, so a heavy query started right after another spills to", one of 4 posts from 3 people on GitHub issues.

ClickHouse rate limits and usage caps block work

3 posts from 3 people on GitHub issues.

History

Momentum went from steady to fading.

Nov 8, 2026

Momentum went from fading to steady.

Nov 6, 2026

Momentum went from steady to fading.

Nov 2, 2026

Momentum went from rising to steady.

Oct 31, 2026

Momentum went from steady to rising.

Oct 29, 2026

Momentum went from fading to steady.

Oct 28, 2026

Momentum went from steady to fading.

Oct 22, 2026

Momentum went from fading to steady.

Oct 18, 2026

Momentum went from steady to fading.

Oct 13, 2026

Momentum went from fading to steady.

Oct 9, 2026

Momentum went from steady to fading.

Oct 2, 2026

Momentum went from new to steady.

Sep 28, 2026

Data and AI struggles

1,787 problems · 347 companies

MLOps

Experiments on ClickHouse are hard to reproduce and track

8 posts from 1 person8d activeFading, +0 this weekunverified

Posts per day

Posts per day8 posts, Sep 21 to Nov 11

The posts behind it

GitHub issuesClickHouse/ClickHouse · clickgapaiNov 1

JSONExtract into JSON type ignores json_type_escape_dots_in_keys

### Describe what's wrong - With `json_type_escape_dots_in_keys = 1`, `JSONExtract( , 'JSON')` still splits dotted keys into nested paths, unlike `CAST( , 'JSON')`. - `'{"a.b":1}'` becomes `{"a":{"b":1}}` with path `a.b` instead of staying `{"a.b":1}` with path `a%2Eb`. - Input...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 26

`load_parts` destroyed before the pool joins its jobs: stack-use-after-scope

### Describe what's wrong - A cold statistics load with `max_threads > 1` reads the destroyed `load_parts` lambda from a `LoadStatistics` worker thread. - Triggered when `scheduleOrThrowOnError` throws `CANNOT_SCHEDULE_TASK` for any loader job after the first. - Queries should...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 24

system.stack_trace query stops at first thread_id block with no match

### Describe what's wrong - Filtering `system.stack_trace` by `thread_id` can return no row or a partial count even though the thread exists. - Happens when `max_block_size` is smaller than the number of threads enumerated before the matching one, e.g. `max_block_size = 1`. -...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 15

vectorscan 5.4.13 rejects `[` and `&&` inside classes in `multiMatch*` patterns

### Describe what's wrong - `multi[Fuzzy]Match*` functions throw `BAD_ARGUMENTS` for patterns with an unescaped `[` or `&&` inside a bracket expression. - Trigger: patterns like `[[]`, `[^[]`, `[][]` or `[a&&b]` passed to any of the six `multiMatch*`/`multiFuzzyMatch*`...

1 replies
GitHub issuesClickHouse/ClickHouse · clickgapaiOct 6

Auto parallel replicas throws LOGICAL_ERROR on JOIN rewritten to IN

### Describe what's wrong - With `automatic_parallel_replicas_mode = 1` and `query_plan_convert_join_to_in = 1`, an `INNER JOIN` returns correct results once, then fails on every later run. - The second run picks the parallel replicas plan once statistics are cached, triggering...

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 23

failpoints_disabled_in_tests check wrongly exempts no-parallel-replicas tests

### Describe what's wrong - The new check_failpoints_are_disabled check fails to flag tests that run in parallel but disable all fail points. - Triggered by any test tagged `no-parallel-replicas` without `no-parallel`, using `SYSTEM DISABLE ALL FAILPOINTS` as cleanup. - Such...

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 22

Empty `\Q\E` absorbs a quantifier: `replaceRegexpAll` still becomes `...One`

### Describe what's wrong - `replaceRegexpAll`/`regexp_replace` drop the trailing replacement when the pattern ends with an empty `\Q\E` before a quantifier and ` Experiments on ClickHouse are hard to reproduce and track

. - Triggered at default settings with `optimize_rewrite_regexp_functions = 1`, e.g. pattern `o\Q\E* Experiments on ClickHouse are hard to reproduce and track
on `'foo'`....

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 21

uniqTheta: 5-byte state blob allocates 1 GiB, unrefused by max_memory_usage

### Describe what's wrong - Deserializing a crafted `uniqTheta` state allocates and zeroes 1 GiB of memory before validating the payload. - Triggered by casting a 5-byte hex literal to `AggregateFunction(uniqTheta, UInt64)` and calling `finalizeAggregation`. - Expected an...

Companies and products named

8 posts
7 posts
About this problem

Evidence

8 posts from 1 person in 1 place, about 1 a week over 42 days. Mostly on ClickHouse/ClickHouse. Tools named alongside: GitHub.

Frustration Frustration 1 of 3· Seen on GitHub issues

How it was grouped

Posts that state a pain and match the "ml-reproducibility" rule about ClickHouse. First post Sep 21, 2026, latest Nov 1, 2026. Unverified: fewer than 3 posts, or one person or place only. Method

The same problem elsewhere

ML experiments are hard to reproduce and track

18 posts from 16 people on GitHub issues, Reddit, Hacker News.

Experiments on DuckDB are hard to reproduce and track

10 posts from 6 people on GitHub issues.

Experiments on Codex are hard to reproduce and track

4 posts from 3 people on GitHub issues.

Experiments on LlamaIndex are hard to reproduce and track

3 posts from 3 people on GitHub issues.

Experiments on MLflow are hard to reproduce and track

3 posts from 3 people on GitHub issues.

Experiments on GitHub are hard to reproduce and track

3 posts from 3 people on GitHub issues, Reddit.

Experiments on llama.cpp are hard to reproduce and track

2 posts from 2 people on GitHub issues. Unverified.

Experiments on OpenAI are hard to reproduce and track

2 posts from 2 people on GitHub issues. Unverified.

Experiments on Apache Superset are hard to reproduce and track

2 posts from 1 person on GitHub issues. Unverified.

Other ClickHouse problems

ClickHouse upgrades break working setups

31 posts from 20 people on GitHub issues.

ClickHouse users keep filing bugs

Top post: "Tighten seccomp policy for optional kernel interfaces", one of 19 posts from 8 people on GitHub issues.

Trouble with ClickHouse column

Top post: "MaterializedPostgreSQL: reading a Nullable column's .null subcolumn (x IS NULL, count(x)) fails with", one of 15 posts from 9 people on GitHub issues.

ClickHouse costs outgrow the value it gives

11 posts from 3 people on GitHub issues.

Trouble with ClickHouse table

Top post: "`SYSTEM RESTORE REPLICA` on a second replica over-bumps the table `metadata` znode version; every later", one of 8 posts from 5 people on GitHub issues.

Trouble with ClickHouse tables

Top post: "Paimon: resolve columns by field id, so tables with renamed or re-added columns are readable", one of 7 posts from 6 people on GitHub issues.

Trouble with ClickHouse join

Top post: "Explicit grace_hash now spills at max_bytes_ratio_before_external_join = 0.5 although the build side fits in", one of 5 posts from 4 people on GitHub issues.

ClickHouse error messages are cryptic

5 posts from 3 people on GitHub issues.

Trouble with ClickHouse read

Top post: "ORC: a corrupt PostScript `metadata_length` makes ORC predicate pushdown read `stripe_stats` out of bounds,", one of 4 posts from 4 people on GitHub issues.

Trouble with ClickHouse database

Top post: "`DROP NAMED COLLECTION` succeeds while a database uses the collection, and the server then fails to start", one of 4 posts from 2 people on GitHub issues.

Trouble with ClickHouse query

Top post: "Memory tracker counts jemalloc's freed pages as used, so a heavy query started right after another spills to", one of 4 posts from 3 people on GitHub issues.

ClickHouse rate limits and usage caps block work

3 posts from 3 people on GitHub issues.

History

Momentum went from steady to fading.

Nov 8, 2026

Momentum went from fading to steady.

Nov 6, 2026

Momentum went from steady to fading.

Nov 2, 2026

Momentum went from rising to steady.

Oct 31, 2026

Momentum went from steady to rising.

Oct 29, 2026

Momentum went from fading to steady.

Oct 28, 2026

Momentum went from steady to fading.

Oct 22, 2026

Momentum went from fading to steady.

Oct 18, 2026

Momentum went from steady to fading.

Oct 13, 2026

Momentum went from fading to steady.

Oct 9, 2026

Momentum went from steady to fading.

Oct 2, 2026

Momentum went from new to steady.

Sep 28, 2026
. - Triggered at default settings with `optimize_rewrite_regexp_functions = 1`, e.g. pattern `o\\Q\\E* Experiments on ClickHouse are hard to reproduce and track

Data and AI struggles

1,787 problems · 347 companies

MLOps

Experiments on ClickHouse are hard to reproduce and track

8 posts from 1 person8d activeFading, +0 this weekunverified

Posts per day

Posts per day8 posts, Sep 21 to Nov 11

The posts behind it

GitHub issuesClickHouse/ClickHouse · clickgapaiNov 1

JSONExtract into JSON type ignores json_type_escape_dots_in_keys

### Describe what's wrong - With `json_type_escape_dots_in_keys = 1`, `JSONExtract( , 'JSON')` still splits dotted keys into nested paths, unlike `CAST( , 'JSON')`. - `'{"a.b":1}'` becomes `{"a":{"b":1}}` with path `a.b` instead of staying `{"a.b":1}` with path `a%2Eb`. - Input...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 26

`load_parts` destroyed before the pool joins its jobs: stack-use-after-scope

### Describe what's wrong - A cold statistics load with `max_threads > 1` reads the destroyed `load_parts` lambda from a `LoadStatistics` worker thread. - Triggered when `scheduleOrThrowOnError` throws `CANNOT_SCHEDULE_TASK` for any loader job after the first. - Queries should...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 24

system.stack_trace query stops at first thread_id block with no match

### Describe what's wrong - Filtering `system.stack_trace` by `thread_id` can return no row or a partial count even though the thread exists. - Happens when `max_block_size` is smaller than the number of threads enumerated before the matching one, e.g. `max_block_size = 1`. -...

GitHub issuesClickHouse/ClickHouse · clickgapaiOct 15

vectorscan 5.4.13 rejects `[` and `&&` inside classes in `multiMatch*` patterns

### Describe what's wrong - `multi[Fuzzy]Match*` functions throw `BAD_ARGUMENTS` for patterns with an unescaped `[` or `&&` inside a bracket expression. - Trigger: patterns like `[[]`, `[^[]`, `[][]` or `[a&&b]` passed to any of the six `multiMatch*`/`multiFuzzyMatch*`...

1 replies
GitHub issuesClickHouse/ClickHouse · clickgapaiOct 6

Auto parallel replicas throws LOGICAL_ERROR on JOIN rewritten to IN

### Describe what's wrong - With `automatic_parallel_replicas_mode = 1` and `query_plan_convert_join_to_in = 1`, an `INNER JOIN` returns correct results once, then fails on every later run. - The second run picks the parallel replicas plan once statistics are cached, triggering...

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 23

failpoints_disabled_in_tests check wrongly exempts no-parallel-replicas tests

### Describe what's wrong - The new check_failpoints_are_disabled check fails to flag tests that run in parallel but disable all fail points. - Triggered by any test tagged `no-parallel-replicas` without `no-parallel`, using `SYSTEM DISABLE ALL FAILPOINTS` as cleanup. - Such...

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 22

Empty `\Q\E` absorbs a quantifier: `replaceRegexpAll` still becomes `...One`

### Describe what's wrong - `replaceRegexpAll`/`regexp_replace` drop the trailing replacement when the pattern ends with an empty `\Q\E` before a quantifier and ` Experiments on ClickHouse are hard to reproduce and track

. - Triggered at default settings with `optimize_rewrite_regexp_functions = 1`, e.g. pattern `o\Q\E* Experiments on ClickHouse are hard to reproduce and track
on `'foo'`....

GitHub issuesClickHouse/ClickHouse · clickgapaiSep 21

uniqTheta: 5-byte state blob allocates 1 GiB, unrefused by max_memory_usage

### Describe what's wrong - Deserializing a crafted `uniqTheta` state allocates and zeroes 1 GiB of memory before validating the payload. - Triggered by casting a 5-byte hex literal to `AggregateFunction(uniqTheta, UInt64)` and calling `finalizeAggregation`. - Expected an...

Companies and products named

8 posts
7 posts
About this problem

Evidence

8 posts from 1 person in 1 place, about 1 a week over 42 days. Mostly on ClickHouse/ClickHouse. Tools named alongside: GitHub.

Frustration Frustration 1 of 3· Seen on GitHub issues

How it was grouped

Posts that state a pain and match the "ml-reproducibility" rule about ClickHouse. First post Sep 21, 2026, latest Nov 1, 2026. Unverified: fewer than 3 posts, or one person or place only. Method

The same problem elsewhere

ML experiments are hard to reproduce and track

18 posts from 16 people on GitHub issues, Reddit, Hacker News.

Experiments on DuckDB are hard to reproduce and track

10 posts from 6 people on GitHub issues.

Experiments on Codex are hard to reproduce and track

4 posts from 3 people on GitHub issues.

Experiments on LlamaIndex are hard to reproduce and track

3 posts from 3 people on GitHub issues.

Experiments on MLflow are hard to reproduce and track

3 posts from 3 people on GitHub issues.

Experiments on GitHub are hard to reproduce and track

3 posts from 3 people on GitHub issues, Reddit.

Experiments on llama.cpp are hard to reproduce and track

2 posts from 2 people on GitHub issues. Unverified.

Experiments on OpenAI are hard to reproduce and track

2 posts from 2 people on GitHub issues. Unverified.

Experiments on Apache Superset are hard to reproduce and track

2 posts from 1 person on GitHub issues. Unverified.

Other ClickHouse problems

ClickHouse upgrades break working setups

31 posts from 20 people on GitHub issues.

ClickHouse users keep filing bugs

Top post: "Tighten seccomp policy for optional kernel interfaces", one of 19 posts from 8 people on GitHub issues.

Trouble with ClickHouse column

Top post: "MaterializedPostgreSQL: reading a Nullable column's .null subcolumn (x IS NULL, count(x)) fails with", one of 15 posts from 9 people on GitHub issues.

ClickHouse costs outgrow the value it gives

11 posts from 3 people on GitHub issues.

Trouble with ClickHouse table

Top post: "`SYSTEM RESTORE REPLICA` on a second replica over-bumps the table `metadata` znode version; every later", one of 8 posts from 5 people on GitHub issues.

Trouble with ClickHouse tables

Top post: "Paimon: resolve columns by field id, so tables with renamed or re-added columns are readable", one of 7 posts from 6 people on GitHub issues.

Trouble with ClickHouse join

Top post: "Explicit grace_hash now spills at max_bytes_ratio_before_external_join = 0.5 although the build side fits in", one of 5 posts from 4 people on GitHub issues.

ClickHouse error messages are cryptic

5 posts from 3 people on GitHub issues.

Trouble with ClickHouse read

Top post: "ORC: a corrupt PostScript `metadata_length` makes ORC predicate pushdown read `stripe_stats` out of bounds,", one of 4 posts from 4 people on GitHub issues.

Trouble with ClickHouse database

Top post: "`DROP NAMED COLLECTION` succeeds while a database uses the collection, and the server then fails to start", one of 4 posts from 2 people on GitHub issues.

Trouble with ClickHouse query

Top post: "Memory tracker counts jemalloc's freed pages as used, so a heavy query started right after another spills to", one of 4 posts from 3 people on GitHub issues.

ClickHouse rate limits and usage caps block work

3 posts from 3 people on GitHub issues.

History

Momentum went from steady to fading.

Nov 8, 2026

Momentum went from fading to steady.

Nov 6, 2026

Momentum went from steady to fading.

Nov 2, 2026

Momentum went from rising to steady.

Oct 31, 2026

Momentum went from steady to rising.

Oct 29, 2026

Momentum went from fading to steady.

Oct 28, 2026

Momentum went from steady to fading.

Oct 22, 2026

Momentum went from fading to steady.

Oct 18, 2026

Momentum went from steady to fading.

Oct 13, 2026

Momentum went from fading to steady.

Oct 9, 2026

Momentum went from steady to fading.

Oct 2, 2026

Momentum went from new to steady.

Sep 28, 2026
on `'foo'`....","author":"clickgapai","day":"2026-09-22","score":0,"comments":0,"entities":["clickhouse","github"],"frustration":0,"sourceName":"ClickHouse/ClickHouse"},{"id":"github:clickhouse/clickhouse#121410","kind":"github","source":"gh:clickhouse/clickhouse","url":"https://github.com/ClickHouse/ClickHouse/issues/121410","title":"uniqTheta: 5-byte state blob allocates 1 GiB, unrefused by max_memory_usage","excerpt":"### Describe what's wrong - Deserializing a crafted `uniqTheta` state allocates and zeroes 1 GiB of memory before validating the payload. - Triggered by casting a 5-byte hex literal to `AggregateFunction(uniqTheta, UInt64)` and calling `finalizeAggregation`. - Expected an...","author":"clickgapai","day":"2026-09-21","score":0,"comments":0,"entities":["clickhouse","github"],"frustration":0,"sourceName":"ClickHouse/ClickHouse"}],"related":[{"id":"ml-reproducibility","statement":"ML experiments are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"","entityName":"","domain":"","method":"pattern","posts":18,"authors":16,"places":12,"engagement":14,"last7":2,"prev7":2,"momentum":"steady","daysActive":16,"severity":0,"firstPost":"2026-09-02","lastPost":"2026-11-08","firstSeen":"2026-09-25 12:39:59","companies":[{"slug":"github","name":"GitHub","domain":"github.com","n":4},{"slug":"mlflow","name":"MLflow","domain":"mlflow.org","n":2},{"slug":"llamaindex","name":"LlamaIndex","domain":"llamaindex.ai","n":2},{"slug":"apache-iceberg","name":"Apache Iceberg","domain":"iceberg.apache.org","n":2},{"slug":"kubernetes","name":"Kubernetes","domain":"kubernetes.io","n":1},{"slug":"postgresql","name":"PostgreSQL","domain":"postgresql.org","n":1}],"kinds":["github","reddit","hn"],"spark":[3,1,0,1,0,0,0,0,0,0,1,0,1,0,1,1,1,1,0,0,0,0,0,0,1,0,1,0,0,0],"top":[{"url":"https://github.com/CodeWithCJ/SparkyFitness/issues/3276","title":"[Bug]: Failed to Load Exercise data","kind":"github","source":"CodeWithCJ/SparkyFitness","author":"MisterRDZ","day":"2026-10-29","score":0},{"url":"https://github.com/mlflow/mlflow/issues/27324","title":"test_source_prompt_requirements_resolves_the_name_like_load_prompt fails with sqlite 'unable to open database file'","kind":"github","source":"mlflow/mlflow","author":"mlflow-app[bot]","day":"2026-10-30","score":0},{"url":"https://github.com/mlflow/mlflow/issues/25525","title":"[FR] Expose Helm health probes as configuration variables","kind":"github","source":"mlflow/mlflow","author":"jeremyeder","day":"2026-09-02","score":0}],"verified":true,"rising":1.8,"persistent":true,"opportunity":"18 posts from 16 people in 12 places, about 2 a week over 68 days. Mostly on crewAIInc/crewAI, microsoft/semantic-kernel, mlflow/mlflow. Tools named alongside: GitHub, MLflow, LlamaIndex, Apache Iceberg.","summary":"","summaryBy":""},{"id":"duckdb-ml-reproducibility","statement":"Experiments on DuckDB are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"duckdb","entityName":"DuckDB","domain":"duckdb.org","method":"pattern","posts":10,"authors":6,"places":1,"engagement":5,"last7":4,"prev7":4,"momentum":"steady","daysActive":6,"severity":0,"firstPost":"2026-10-03","lastPost":"2026-11-10","firstSeen":"2026-10-15 05:27:06","companies":[{"slug":"duckdb","name":"DuckDB","domain":"duckdb.org","n":10},{"slug":"pypi","name":"PyPI","domain":"pypi.org","n":1},{"slug":"start","name":"START","domain":"start.film","n":1}],"kinds":["github"],"spark":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,3,0,0,0,0,0,0,0,0,0,2,2,0],"top":[{"url":"https://github.com/duckdb/duckdb/issues/26803","title":"Silent parquet stat corruption bug","kind":"github","source":"duckdb/duckdb","author":"joseph-isaacs","day":"2026-10-09","score":0},{"url":"https://github.com/duckdb/duckdb/issues/28613","title":"Correlated HAVING returns NULL instead of a constant when the projection contains a scalar subquery","kind":"github","source":"duckdb/duckdb","author":"guijinxin","day":"2026-11-10","score":0},{"url":"https://github.com/duckdb/duckdb/issues/28608","title":"redundant_order removes a sort before nextval(), changing which row is returned","kind":"github","source":"duckdb/duckdb","author":"Syedowais312","day":"2026-11-09","score":0}],"verified":true,"rising":3.9,"persistent":true,"opportunity":"10 posts from 6 people in 1 place, about 2 a week over 39 days. Mostly on duckdb/duckdb. Tools named alongside: PyPI, START.","summary":"","summaryBy":""},{"id":"openai-codex-ml-reproducibility","statement":"Experiments on Codex are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"openai-codex","entityName":"Codex","domain":"openai.com","method":"pattern","posts":4,"authors":3,"places":2,"engagement":0,"last7":2,"prev7":0,"momentum":"rising","daysActive":3,"severity":0,"firstPost":"2026-09-28","lastPost":"2026-11-06","firstSeen":"2026-10-19 05:27:05","companies":[{"slug":"openai-codex","name":"Codex","domain":"openai.com","n":4},{"slug":"github","name":"GitHub","domain":"github.com","n":1},{"slug":"pypi","name":"PyPI","domain":"pypi.org","n":1},{"slug":"llamaindex","name":"LlamaIndex","domain":"llamaindex.ai","n":1},{"slug":"chroma","name":"Chroma","domain":"trychroma.com","n":1},{"slug":"crewai","name":"CrewAI","domain":"crewai.com","n":1}],"kinds":["github"],"spark":[0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0],"top":[{"url":"https://github.com/crewAIInc/crewAI/issues/9163","title":"[BUG] Flow.reload selects a stale snapshot when parallel methods finish out of start order","kind":"github","source":"crewAIInc/crewAI","author":"flysheep-ai","day":"2026-11-06","score":0},{"url":"https://github.com/crewAIInc/crewAI/issues/9162","title":"[BUG] Flow ask() loses method attribution in returned coroutines","kind":"github","source":"crewAIInc/crewAI","author":"flysheep-ai","day":"2026-11-06","score":0},{"url":"https://github.com/crewAIInc/crewAI/issues/8214","title":"[BUG] suppress_logging leaves logger levels changed after exit","kind":"github","source":"crewAIInc/crewAI","author":"lakers-abing","day":"2026-10-16","score":0}],"verified":true,"rising":2.5,"persistent":false,"opportunity":"4 posts from 3 people in 2 places, about 1 a week over 40 days. Mostly on crewAIInc/crewAI, run-llama/llama_index. Tools named alongside: GitHub, PyPI, LlamaIndex, Chroma.","summary":"","summaryBy":""},{"id":"llamaindex-ml-reproducibility","statement":"Experiments on LlamaIndex are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"llamaindex","entityName":"LlamaIndex","domain":"llamaindex.ai","method":"pattern","posts":3,"authors":3,"places":1,"engagement":3,"last7":0,"prev7":0,"momentum":"fading","daysActive":3,"severity":0,"firstPost":"2026-09-19","lastPost":"2026-10-14","firstSeen":"2026-10-04 05:27:04","companies":[{"slug":"llamaindex","name":"LlamaIndex","domain":"llamaindex.ai","n":3}],"kinds":["github"],"spark":[0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/run-llama/llama_index/issues/23515","title":"[Bug]: Restoring a context loses an event a list join already holds, when it came from a nested fan-out restored while waiting","kind":"github","source":"run-llama/llama_index","author":"yifanxiong272","day":"2026-10-14","score":0},{"url":"https://github.com/run-llama/llama_index/issues/23334","title":"[Bug]: SimpleFileNodeParser ignores custom id_func for supported file types","kind":"github","source":"run-llama/llama_index","author":"takagibit18","day":"2026-10-02","score":0},{"url":"https://github.com/run-llama/llama_index/issues/23134","title":"[Bug]: stream_structured_predict / astream_structured_predict raise UnboundLocalError instead of yielding nothing when the partial stream is","kind":"github","source":"run-llama/llama_index","author":"BlueX888","day":"2026-09-19","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"3 posts from 3 people in 1 place, about 1 a week over 26 days. Mostly on run-llama/llama_index.","summary":"","summaryBy":""},{"id":"mlflow-ml-reproducibility","statement":"Experiments on MLflow are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"mlflow","entityName":"MLflow","domain":"mlflow.org","method":"pattern","posts":3,"authors":3,"places":1,"engagement":4,"last7":0,"prev7":2,"momentum":"fading","daysActive":3,"severity":0,"firstPost":"2026-09-09","lastPost":"2026-11-02","firstSeen":"2026-11-03 05:27:06","companies":[{"slug":"mlflow","name":"MLflow","domain":"mlflow.org","n":3},{"slug":"github","name":"GitHub","domain":"github.com","n":3},{"slug":"sqlite","name":"SQLite","domain":"sqlite.org","n":1},{"slug":"pypi","name":"PyPI","domain":"pypi.org","n":1}],"kinds":["github"],"spark":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/mlflow/mlflow/issues/27419","title":"[BUG] SFTP artifact store fails on import with paramiko >= 4.0 (pysftp imports removed DSSKey)","kind":"github","source":"mlflow/mlflow","author":"Dibya2521","day":"2026-11-02","score":0},{"url":"https://github.com/mlflow/mlflow/issues/27281","title":"registered-models/search and other list routes return resources that a workspace `USE` member can't read","kind":"github","source":"mlflow/mlflow","author":"a-gajam","day":"2026-10-29","score":0},{"url":"https://github.com/mlflow/mlflow/issues/25728","title":"[FR] Link model versions to their source logged model in the Model Registry UI","kind":"github","source":"mlflow/mlflow","author":"rrioh","day":"2026-09-09","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"3 posts from 3 people in 1 place, about 1 a week over 55 days. Mostly on mlflow/mlflow. Tools named alongside: GitHub, SQLite, PyPI.","summary":"","summaryBy":""},{"id":"github-ml-reproducibility","statement":"Experiments on GitHub are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"github","entityName":"GitHub","domain":"github.com","method":"pattern","posts":3,"authors":3,"places":2,"engagement":8,"last7":0,"prev7":1,"momentum":"fading","daysActive":3,"severity":0,"firstPost":"2026-09-21","lastPost":"2026-11-02","firstSeen":"2026-10-10 05:27:03","companies":[{"slug":"github","name":"GitHub","domain":"github.com","n":3},{"slug":"crewai","name":"CrewAI","domain":"crewai.com","n":1}],"kinds":["github","reddit"],"spark":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/crewAIInc/crewAI/issues/7904","title":"[BUG] Task rejects valid guardrail return annotations with postponed annotations","kind":"github","source":"crewAIInc/crewAI","author":"Sinfony8838","day":"2026-10-05","score":0},{"url":"https://github.com/crewAIInc/crewAI/issues/7684","title":"[BUG] QdrantEdgeStorage crashes on Windows during orphaned-shard cleanup (os.kill signal 0 unsupported)","kind":"github","source":"crewAIInc/crewAI","author":"josephkamau32","day":"2026-09-21","score":0},{"url":"https://www.reddit.com/r/MachineLearning/comments/1xm8dbo/lightmis_ultralightweight_medical_image/","title":"LightMIS: Ultra-lightweight medical image segmentation for edge devices [R]","kind":"reddit","source":"r/MachineLearning","author":"u/OkLion2068","day":"2026-11-02","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"3 posts from 3 people in 2 places, about 1 a week over 43 days. Mostly on crewAIInc/crewAI, r/MachineLearning. Tools named alongside: CrewAI.","summary":"","summaryBy":""},{"id":"llama-cpp-ml-reproducibility","statement":"Experiments on llama.cpp are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"llama-cpp","entityName":"llama.cpp","domain":"github.com","method":"pattern","posts":2,"authors":2,"places":1,"engagement":0,"last7":2,"prev7":0,"momentum":"new","daysActive":2,"severity":0,"firstPost":"2026-11-06","lastPost":"2026-11-07","firstSeen":"2026-11-08 05:27:08","companies":[{"slug":"llama-cpp","name":"llama.cpp","domain":"github.com","n":2},{"slug":"github","name":"GitHub","domain":"github.com","n":2}],"kinds":["github"],"spark":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0],"top":[{"url":"https://github.com/ggml-org/llama.cpp/issues/31842","title":"Misc. bug: Redundant casts in ggml_vec_dot_bf16 cause precision loss and performance drop","kind":"github","source":"ggml-org/llama.cpp","author":"makemefeelgr8","day":"2026-11-07","score":0},{"url":"https://github.com/ggml-org/llama.cpp/issues/31772","title":"Proposal: Configurable resource limits for sequence-state I/O","kind":"github","source":"ggml-org/llama.cpp","author":"marcelromano","day":"2026-11-06","score":0}],"verified":false,"rising":3,"persistent":false,"opportunity":"2 posts from 2 people in 1 place, about 2 a week over 2 days. Mostly on ggml-org/llama.cpp. Tools named alongside: GitHub.","summary":"","summaryBy":""},{"id":"openai-ml-reproducibility","statement":"Experiments on OpenAI are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"openai","entityName":"OpenAI","domain":"openai.com","method":"pattern","posts":2,"authors":2,"places":2,"engagement":8,"last7":0,"prev7":1,"momentum":"fading","daysActive":2,"severity":0,"firstPost":"2026-09-16","lastPost":"2026-11-04","firstSeen":"2026-11-05 05:27:07","companies":[{"slug":"openai","name":"OpenAI","domain":"openai.com","n":2},{"slug":"claude","name":"Claude","domain":"anthropic.com","n":1},{"slug":"mlflow","name":"MLflow","domain":"mlflow.org","n":1},{"slug":"bedrock","name":"Amazon Bedrock","domain":"aws.amazon.com","n":1},{"slug":"github","name":"GitHub","domain":"github.com","n":1},{"slug":"deepseek","name":"DeepSeek","domain":"deepseek.com","n":1}],"kinds":["github"],"spark":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/mlflow/mlflow/issues/25898","title":"[BUG] AI Gateway: `send_stream_request` drops the upstream error message unless the body is OpenAI-shaped","kind":"github","source":"mlflow/mlflow","author":"rhamzatov","day":"2026-09-16","score":0},{"url":"https://github.com/open-webui/open-webui/issues/33722","title":"Bug: Disabled models remain accessible in existing chats and continue generating API charges (v0.12.4)","kind":"github","source":"open-webui/open-webui","author":"lmoonzs","day":"2026-11-04","score":1}],"verified":false,"rising":0,"persistent":false,"opportunity":"2 posts from 2 people in 2 places, about 1 a week over 50 days. Mostly on mlflow/mlflow, open-webui/open-webui. Tools named alongside: Claude, MLflow, Amazon Bedrock, GitHub.","summary":"","summaryBy":""},{"id":"apache-superset-ml-reproducibility","statement":"Experiments on Apache Superset are hard to reproduce and track","category":"mlops","issue":"ml-reproducibility","entity":"apache-superset","entityName":"Apache Superset","domain":"superset.apache.org","method":"pattern","posts":2,"authors":1,"places":1,"engagement":0,"last7":0,"prev7":0,"momentum":"fading","daysActive":2,"severity":0,"firstPost":"2026-09-24","lastPost":"2026-10-08","firstSeen":"2026-10-09 05:27:05","companies":[{"slug":"apache-superset","name":"Apache Superset","domain":"superset.apache.org","n":2},{"slug":"github","name":"GitHub","domain":"github.com","n":2}],"kinds":["github"],"spark":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/apache/superset/issues/45079","title":"mypy: UUID/perm narrowing missing in new restore version tests (10 errors)","kind":"github","source":"apache/superset","author":"sadpandajoe","day":"2026-10-08","score":0},{"url":"https://github.com/apache/superset/issues/44609","title":"nightly full-repo mypy fails: dataset_scope .in_() calls and semantic_view_chart_filter perm reads (6 errors)","kind":"github","source":"apache/superset","author":"sadpandajoe","day":"2026-09-24","score":0}],"verified":false,"rising":0,"persistent":false,"opportunity":"2 posts from 1 person in 1 place, about 1 a week over 15 days. Mostly on apache/superset. Tools named alongside: GitHub.","summary":"","summaryBy":""}],"sameEntity":[{"id":"clickhouse-breaking-changes","statement":"ClickHouse upgrades break working setups","category":"reliability","issue":"breaking-changes","entity":"clickhouse","entityName":"ClickHouse","domain":"clickhouse.com","method":"pattern","posts":31,"authors":20,"places":3,"engagement":34,"last7":0,"prev7":8,"momentum":"fading","daysActive":19,"severity":0,"firstPost":"2026-09-21","lastPost":"2026-11-04","firstSeen":"2026-09-27 05:42:20","companies":[{"slug":"clickhouse","name":"ClickHouse","domain":"clickhouse.com","n":31},{"slug":"github","name":"GitHub","domain":"github.com","n":20},{"slug":"text","name":"Text","domain":"investor.text.com","n":1},{"slug":"langfuse","name":"Langfuse","domain":"langfuse.com","n":1},{"slug":"kubernetes","name":"Kubernetes","domain":"kubernetes.io","n":1},{"slug":"apache-superset","name":"Apache Superset","domain":"superset.apache.org","n":1}],"kinds":["github"],"spark":[1,2,3,1,0,0,0,0,0,1,0,0,0,1,2,0,0,0,0,0,1,5,2,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/ClickHouse/ClickHouse/issues/126264","title":"RFC: Compression codecs for subcolumns","kind":"github","source":"ClickHouse/ClickHouse","author":"vitlibar","day":"2026-10-16","score":1},{"url":"https://github.com/ClickHouse/ClickHouse/issues/121509","title":"Reuse checksum-matching detached parts when bootstrapping a fresh replica","kind":"github","source":"ClickHouse/ClickHouse","author":"patelsmit32123","day":"2026-09-22","score":1},{"url":"https://github.com/ClickHouse/ClickHouse/issues/128592","title":"Wide parts with a `Geometry` column written before 26.8 are unreadable after the upgrade: `Stream g.MultiPoint.size0 ... is not found`","kind":"github","source":"ClickHouse/ClickHouse","author":"fm4v","day":"2026-11-02","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"31 posts from 20 people in 3 places, about 4 a week over 45 days. Mostly on ClickHouse/ClickHouse, BerriAI/litellm, apache/superset. Tools named alongside: GitHub, Text, Langfuse, Kubernetes.","summary":"ClickHouse users face performance issues and unexpected behavior with array comparisons, default ZSTD compression, table codecs, and Iceberg delete files.","summaryBy":"model"},{"id":"clickhouse-issues","statement":"ClickHouse users keep filing bugs","category":"databases","issue":"general","entity":"clickhouse","entityName":"ClickHouse","domain":"clickhouse.com","method":"entity","posts":19,"authors":8,"places":2,"engagement":25,"last7":0,"prev7":1,"momentum":"fading","daysActive":14,"severity":0,"firstPost":"2026-09-21","lastPost":"2026-10-31","firstSeen":"2026-09-27 05:42:20","companies":[{"slug":"clickhouse","name":"ClickHouse","domain":"clickhouse.com","n":19},{"slug":"github","name":"GitHub","domain":"github.com","n":15},{"slug":"dbt","name":"dbt","domain":"getdbt.com","n":1}],"kinds":["github"],"spark":[0,2,2,1,0,0,0,0,0,0,0,1,0,1,1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/ClickHouse/ClickHouse/issues/127958","title":"Tighten seccomp policy for optional kernel interfaces","kind":"github","source":"ClickHouse/ClickHouse","author":"motsc","day":"2026-10-27","score":0},{"url":"https://github.com/ClickHouse/ClickHouse/issues/127841","title":"darwin fast test: fix the tests newly failing on macOS ARM and remove their no-darwin tag","kind":"github","source":"ClickHouse/ClickHouse","author":"leshikus","day":"2026-10-26","score":0},{"url":"https://github.com/ClickHouse/ClickHouse/issues/126314","title":"`Build (amd_msan)` is about two weeks from the x86-64 2 GiB relocation limit","kind":"github","source":"ClickHouse/ClickHouse","author":"groeneai","day":"2026-10-16","score":1}],"verified":true,"rising":0,"persistent":false,"opportunity":"19 posts from 8 people in 2 places, about 3 a week over 41 days. Mostly on ClickHouse/ClickHouse, dbt-labs/dbt. Tools named alongside: GitHub, dbt.","summary":"ClickHouse users face documentation search inaccuracies, row policy parameter value losses, test failures, and incorrect row count results due to step overflow in FillingRow.","summaryBy":"model"},{"id":"clickhouse-kw-column","statement":"Trouble with ClickHouse column","category":"databases","issue":"kw:column","entity":"clickhouse","entityName":"ClickHouse","domain":"clickhouse.com","method":"keyword","posts":15,"authors":9,"places":2,"engagement":12,"last7":0,"prev7":5,"momentum":"fading","daysActive":11,"severity":0,"firstPost":"2026-09-21","lastPost":"2026-11-03","firstSeen":"2026-09-27 05:42:20","companies":[{"slug":"clickhouse","name":"ClickHouse","domain":"clickhouse.com","n":15},{"slug":"github","name":"GitHub","domain":"github.com","n":10},{"slug":"apache-superset","name":"Apache Superset","domain":"superset.apache.org","n":1},{"slug":"slack","name":"Slack","domain":"slack.com","n":1},{"slug":"minio","name":"MinIO","domain":"min.io","n":1},{"slug":"postgresql","name":"PostgreSQL","domain":"postgresql.org","n":1}],"kinds":["github"],"spark":[0,0,1,0,0,0,0,0,0,1,0,1,0,1,0,0,0,0,0,2,2,1,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/ClickHouse/ClickHouse/issues/128712","title":"MaterializedPostgreSQL: reading a Nullable column's .null subcolumn (x IS NULL, count(x)) fails with NOT_FOUND_COLUMN_IN_BLOCK on an empty t","kind":"github","source":"ClickHouse/ClickHouse","author":"hl","day":"2026-11-02","score":0},{"url":"https://github.com/apache/superset/issues/45340","title":"Macro get_time_filter() fails in virtual datasets when the date column is not present in the final SELECT clause","kind":"github","source":"apache/superset","author":"moonpigeonnnnnn","day":"2026-10-15","score":0},{"url":"https://github.com/ClickHouse/ClickHouse/issues/125297","title":"`DROP INDEX` deletes column marks in pairs the new check admits as legal","kind":"github","source":"ClickHouse/ClickHouse","author":"clickgapai","day":"2026-10-12","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"15 posts from 9 people in 2 places, about 2 a week over 44 days. Mostly on ClickHouse/ClickHouse, apache/superset. Tools named alongside: GitHub, Apache Superset, Slack, MinIO.","summary":"ClickHouse users encounter date range overflow bugs, duplicate virtual column errors, alias aggregate exceptions, and stress test server crashes.","summaryBy":"model"},{"id":"clickhouse-observability-cost","statement":"ClickHouse costs outgrow the value it gives","category":"cloud-cost","issue":"observability-cost","entity":"clickhouse","entityName":"ClickHouse","domain":"clickhouse.com","method":"pattern","posts":11,"authors":3,"places":1,"engagement":5,"last7":0,"prev7":2,"momentum":"fading","daysActive":8,"severity":0,"firstPost":"2026-09-22","lastPost":"2026-11-03","firstSeen":"2026-10-09 05:27:05","companies":[{"slug":"clickhouse","name":"ClickHouse","domain":"clickhouse.com","n":11},{"slug":"github","name":"GitHub","domain":"github.com","n":8},{"slug":"oracle","name":"Oracle","domain":"oracle.com","n":1}],"kinds":["github"],"spark":[0,2,2,0,0,0,0,0,0,0,0,1,0,0,2,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/ClickHouse/ClickHouse/issues/129119","title":"Copy equi-join key filters onto Iceberg and Parquet reads, so they skip files, row groups and pages: Iceberg propagate_predicate_across_equi","kind":"github","source":"ClickHouse/ClickHouse","author":"snelheidai","day":"2026-11-03","score":0},{"url":"https://github.com/ClickHouse/ClickHouse/issues/127916","title":"uniq*, min and max of a LowCardinality column without GROUP BY: add only the distinct dictionary values of each block","kind":"github","source":"ClickHouse/ClickHouse","author":"snelheidai","day":"2026-10-27","score":0},{"url":"https://github.com/ClickHouse/ClickHouse/issues/127920","title":"ORDER BY \u003cLowCardinality(String)> LIMIT n: enable the top-K dynamic filter by comparing dictionary values once per block","kind":"github","source":"ClickHouse/ClickHouse","author":"snelheidai","day":"2026-10-27","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"11 posts from 3 people in 1 place, about 2 a week over 43 days. Mostly on ClickHouse/ClickHouse. Tools named alongside: GitHub, Oracle.","summary":"","summaryBy":""},{"id":"clickhouse-kw-table","statement":"Trouble with ClickHouse table","category":"databases","issue":"kw:table","entity":"clickhouse","entityName":"ClickHouse","domain":"clickhouse.com","method":"keyword","posts":8,"authors":5,"places":1,"engagement":11,"last7":0,"prev7":1,"momentum":"fading","daysActive":5,"severity":0,"firstPost":"2026-09-21","lastPost":"2026-11-02","firstSeen":"2026-09-27 05:42:20","companies":[{"slug":"clickhouse","name":"ClickHouse","domain":"clickhouse.com","n":8},{"slug":"github","name":"GitHub","domain":"github.com","n":6},{"slug":"mysql","name":"MySQL","domain":"mysql.com","n":1}],"kinds":["github"],"spark":[0,0,0,0,0,0,0,0,0,0,2,1,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0],"top":[{"url":"https://github.com/ClickHouse/ClickHouse/issues/127629","title":"`SYSTEM RESTORE REPLICA` on a second replica over-bumps the table `metadata` znode version; every later `ALTER` fails with `CANNOT_ASSIGN_AL","kind":"github","source":"ClickHouse/ClickHouse","author":"filimonov","day":"2026-10-23","score":1},{"url":"https://github.com/ClickHouse/ClickHouse/issues/127645","title":"`BACKUP` to `File()` on a case-insensitive filesystem: fail on names that differ only in case instead of dropping one silently, as `CREATE T","kind":"github","source":"ClickHouse/ClickHouse","author":"leshikus","day":"2026-10-23","score":0},{"url":"https://github.com/ClickHouse/ClickHouse/issues/121304","title":"clickhouse local: table/dictionary names longer than NAME_MAX raise std::filesystem_error (code 1001) instead of UNKNOWN_TABLE","kind":"github","source":"ClickHouse/ClickHouse","author":"qoega","day":"2026-09-21","score":0}],"verified":true,"rising":0,"persistent":false,"opportunity":"8 posts from 5 people in 1 place, about 1 a week over 43 days. 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