Problemsby IbisTrouble with ClickHouse merge
Databases2 posts from 1 person1d active+00 posts in the last 7 days, 2 the 7 days before (fading)Unverified
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The posts behind it
2, newest firstCODEC(FPC) on bucketed Map fails every merge after bucket_indexes becomes UInt8### Describe what's wrong - Merging a bucketed `Map(Float*, Float*) CODEC(FPC)` column throws BAD_ARGUMENTS and the merge never completes. - Trigger: `map_serialization_version = 'with_buckets'` with more than one bucket, then `OPTIMIZE TABLE ... FINAL` or a background merge. -...ClickHouse/ClickHouse · clickgapaiOpen ↗Merge records a version above an unapplied lightweight `UPDATE`: update lost### Describe what's wrong - On plain `MergeTree`, a merge that materializes pending `DROP COLUMN` mutations writes its result part above a lightweight `UPDATE` it did not apply, and the update is gone for good.** #124167 (where this was found; not confirmed as the cause) part...ClickHouse/ClickHouse · clickgapaiOpen ↗
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Evidence
2 posts from 1 person in 1 place, about 2 a week over 1 days. Mostly on ClickHouse/ClickHouse. Tools named alongside: GitHub.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts about ClickHouse with no known issue, sharing the word "merge". First post Oct 12, 2026, latest Oct 12, 2026. Unverified: fewer than 3 posts, or one person or place only. Method
Other ClickHouse problems
ClickHouse upgrades break working setupsTrouble with ClickHouse jsonClickHouse costs outgrow the value it givesClickHouse users keep filing bugsTrouble with ClickHouse columnTrouble with ClickHouse rowsExperiments on ClickHouse are hard to reproduce and trackTrouble with ClickHouse joinTrouble with ClickHouse nameTrouble with ClickHouse readClickHouse error messages are crypticTrouble with ClickHouse constant
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Trouble with ClickHouse merge (2 posts)