Issues

• [Minor] Pin filter/index blocks the block cache can't admit

  fjall-rs/lsm-tree#327 · Filter by author styris-ame opened on Oct 28, 2026

• Small block caches can't hold large filter/index blocks on many-core machines, so every point read reloads them

  fjall-rs/lsm-tree#326 · Filter by author styris-ame opened on Oct 28, 2026

• Drop enum_dispatch dependency

  dependencieshelp wantedrefactor
  Task

  fjall-rs/lsm-tree#323 · Filter by author marvin-j97 opened on Sep 20, 2026

• MVCC GC in CompactionStream drops the version the oldest snapshot must read (tests peeked instead of head)

  good first issuehelp wantedinvalidtype:compaction
  fjall-rs/lsm-tree#321 · Filter by author pratikjain-auvern opened on Sep 13, 2026
  3

• Fuzz test optimize_runs

  help wantedtesttype:table
  Task

  fjall-rs/lsm-tree#318 · Filter by author marvin-j97 opened on Aug 9, 2026
  3

• Allow bypassing the cache for blob reads

  performancetype:cache
  fjall-rs/lsm-tree#313 · Filter by author styris-ame opened on Jul 23, 2026
  1

• Adjust FIFO compaction to better handle major compaction

  enhancementgood first issuehelp wantedtype:compaction
  Task

  fjall-rs/lsm-tree#312 · Filter by author marvin-j97 opened on Jul 23, 2026
  2

• Triggering PoisonError in FIFO compaction when inserting data

  type:compaction
  fjall-rs/lsm-tree#310 · Filter by author StephanvanSchaik opened on Jul 23, 2026
  6

• Dynamic config changes

  apienhancementhelp wanted
  Feature

  fjall-rs/lsm-tree#308 · Filter by author marvin-j97 opened on Jul 14, 2026

• Filesystem abstraction

  apienhancementepichelp wantedrefactortesttype:fd-tabletype:tabletype:vlogtype:write-path
  Feature

  fjall-rs/lsm-tree#306 · Filter by author marvin-j97 opened on Jul 13, 2026
  4

• Very small databases are always recovered without pinning after ingestion

  api
  fjall-rs/lsm-tree#289 · Filter by author marvin-j97 opened on Apr 22, 2026

• Add write_batch method to AbstractTree

  enhancementgood first issuehelp wantedperformancetype:memtabletype:write-path
  Task

  fjall-rs/lsm-tree#283 · Filter by author marvin-j97 opened on Apr 9, 2026
  2

  

• [V4] Make blob frame header checksum fully encompassing

  breakingenhancementtype:vlog
  Feature

  fjall-rs/lsm-tree#278 · Filter by author marvin-j97 opened on Mar 20, 2026

• Pipe blobs written by Compaction Filters directly into CompactionFlavour

  challengingenhancementhelp wantedrefactortype:compaction
  Task

  fjall-rs/lsm-tree#253 · Filter by author marvin-j97 opened on Mar 7, 2026

• Data block: seqno aware seek

  enhancementgood first issuehelp wantedperformancetype:point-readtype:table
  Task

  fjall-rs/lsm-tree#237 · Filter by author marvin-j97 opened on Jan 16, 2026

• Restore Size-Tiered compaction strategy

  enhancementgood first issuehelp wantedregressiontype:compaction
  Feature

  fjall-rs/lsm-tree#231 · Filter by author marvin-j97 opened on Jan 6, 2026
  2

• Block-level encryption

  apienhancementepicfile formathelp wantedtype:table
  Feature

  fjall-rs/lsm-tree#224 · Filter by author marvin-j97 opened on Dec 14, 2025
  3

• MUTANTS!

  good first issuehelp wantedtest
  Task

  fjall-rs/lsm-tree#205 · Filter by author marvin-j97 opened on Nov 25, 2025
  2

• Change tests accessing internals to be crate-local

  refactortest
  Task

  fjall-rs/lsm-tree#204 · Filter by author marvin-j97 opened on Nov 23, 2025

• Descriptor cache lookups can be reduced

  enhancementgood first issuehelp wantedperformancetype:fd-tabletype:tableunimportant
  Task

  fjall-rs/lsm-tree#196 · Filter by author marvin-j97 opened on Nov 12, 2025
  1

• Tree checksum verification

  apieasyenhancementgood first issuehelp wantedtype:tabletype:vlog
  Feature

  fjall-rs/lsm-tree#187 · Filter by author marvin-j97 opened on Nov 5, 2025

• Allow disabling block binary seek index

  help wantedtype:table
  Feature

  fjall-rs/lsm-tree#185 · Filter by author marvin-j97 opened on Nov 3, 2025

• Support index block restart intervals >1

  enhancementhelp wantedtype:table
  Task

  fjall-rs/lsm-tree#184 · Filter by author marvin-j97 opened on Nov 3, 2025

• Intra-L0 compaction

  challengingtype:compaction
  Feature

  fjall-rs/lsm-tree#163 · Filter by author marvin-j97 opened on Oct 7, 2025

• Extend Model testing

  challenginggood first issuehelp wantedtest
  Task

  fjall-rs/lsm-tree#160 · Filter by author marvin-j97 opened on Oct 4, 2025
  2