Fluent Bit v5.2.0

Issues

• out_vivo_exporter: fix telemetry loss and add compressed OTLP JSON

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  fluent/fluent-bit#12418·edsiper opened Sep 16, 2026 · Updated Sep 16, 2026
  14

• processor_journald_otel: handle journald as otel processed logs

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  fluent/fluent-bit#12387·cosmo0920 opened Sep 8, 2026 · Updated Oct 10, 2026
  10

• output: engine: output_throttle: Implement throttle operations for output plugins

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  fluent/fluent-bit#12393·cosmo0920 opened Sep 9, 2026 · Updated Sep 17, 2026
  32

• in_tail: Implement budget for max number of opening files

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  fluent/fluent-bit#12441·cosmo0920 opened Sep 18, 2026 · Updated Sep 28, 2026
  7

• wasm: add experimental browser runtime and SDK

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  fluent/fluent-bit#12429·edsiper opened Sep 17, 2026 · Updated Sep 30, 2026·Draft
  1

• output: mitigate heavy loaded case

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  fluent/fluent-bit#12484·cosmo0920 opened Sep 29, 2026 · Updated Sep 29, 2026
  8

• procesor_content_modifier: Accept list on configure

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  fluent/fluent-bit#12329·cosmo0920 opened Aug 25, 2026 · Updated Sep 29, 2026
  9

• lib: upgrade bundled jemalloc to 5.4.0

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  fluent/fluent-bit#12493·edsiper opened Sep 30, 2026 · Updated Sep 30, 2026
  5

• lib: upgrade LuaJIT and fix CMake wrapper compatibility

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  fluent/fluent-bit#12503·edsiper opened Oct 1, 2026 · Updated Oct 1, 2026
  10

• processor: fuse compatible content modifier chains

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  fluent/fluent-bit#12505·edsiper opened Oct 2, 2026 · Updated Oct 2, 2026·Draft
  1

• processor_sql: preserve resource and scope groups when filtering logs

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  fluent/fluent-bit#12506·edsiper opened Oct 2, 2026 · Updated Oct 2, 2026·Draft
  1

• out_opentelemetry: preserve dropped attribute counts in log exports

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  fluent/fluent-bit#12507·edsiper opened Oct 2, 2026 · Updated Oct 2, 2026·Draft
  1

• processor: isolate CFL codec state across worker invocations

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  fluent/fluent-bit#12511·edsiper opened Oct 2, 2026 · Updated Oct 2, 2026·Draft
  1

• Linear memory growth (reclaimable kernel slab) with storage.type: filesystem. POOL proposal.

  status: waiting-for-triage
  fluent/fluent-bit#12504 · Filter by author dpavlov2024 opened on Oct 1, 2026 · Fluent Bit v5.2.0
  6

• wasm: filter_wasm: pack value len pair for returned format of wasm

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  fluent/fluent-bit#12518·cosmo0920 opened Oct 5, 2026 · Updated Oct 9, 2026
  6

• out_s3: make an optional arrow schema option

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  fluent/fluent-bit#12529·cosmo0920 opened Oct 8, 2026 · Updated Oct 10, 2026
  9