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storage: disk space not reclaimed even though live bytes are deleted #90149

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cockroachdb/pebble
#2022
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storage: disk space not reclaimed even though live bytes are deleted#90149
cockroachdb/pebble
#2022
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nicktrav
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A-row-level-ttlA-storageRelating to our storage engine (Pebble) on-disk storage.C-bugCode not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.T-storageStorage Teambranch-masterFailures and bugs on the master branch.branch-release-22.2Used to mark GA and release blockers, technical advisories, and bugs for 22.2
@rafiss

Description

@rafiss
rafiss
opened on Oct 18, 2022

Describe the problem

@glennfawcett ran an experiment with row-level TTL. Even though rows are deleted by the job, and the KV layer seemingly thinks the space is being freed, the disk usage continues steadily increasing.

To Reproduce

See instructions in https://cockroachlabs.slack.com/archives/C028YAH6Y3V/p1665959426411949

Expected behavior

Disk space should be freed.

Additional data / screenshots

image

Environment:

  • CockroachDB version v22.2.0-beta.3

Jira issue: CRDB-20616

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A-row-level-ttlA-storageRelating to our storage engine (Pebble) on-disk storage.C-bugCode not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.T-storageStorage Teambranch-masterFailures and bugs on the master branch.branch-release-22.2Used to mark GA and release blockers, technical advisories, and bugs for 22.2

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