flux-core v0.86.0

Published: Jun 3, 2026 by flux-framework

Download from GitHub here

Release Notes

resource: support checkpoint and eventlog truncation (#7594)
cmd: add flux admin system-scripts to list status and details of prolog, epilog, and housekeeping configuration (#7640)
broker: add broker.conf-builtin RPC (#7642)
python: support namespace package extension via pkgutil (#7633)
python: add optional output_callback to JobWatcher (#7628)
cmd: fall back to PATH when searching for flux-* subcommands (#7631)
support launching test Flux instances with fake resources (#7619)
use zeromq zerocopy for message parts >= 64kB (#7613)

shell: limit job input written to the KVS to 10M (#7650)
librlist: fix overzealous GPU duplicate check when loading topology (#7647)
sdexec: avoid error message truncation (#7635)
flux-job: provide exception message for debugged jobs that fail before start (#7638)
kvs: fix memory leak on namespace lookup failure (#7622)
cmd: fix handling of Python subcommands when searching PATH (#7636)
python: re-export full stdlib API for flux.utils.dataclasses (#7632)
scheduler: relax pool_class subclass check (#7626)
python: JournalConsumer: only set R and jobspec on alloc and submit events (#7630)
librlist: allow missing HostName in hwloc XML (#7629)
improve error messages when sdexec-mapper fails to map cores or GPUs (#7618)
shell: fix potential NULL deref in rexec server shutdown path (#7620)
broker: fix debug logging of module loader pid (#7616)
python: improve handling of the sort: prefix in UtilFormat (#7602)
python: fix ply ImportError (#7591)

doc: update jansson version refs in documentation (#7652)
build: fix missing shebangs and non-executable scripts (#7643)
github: bump the github-actions group with 6 updates (#7648)
doc: remove -B as --broker-opts short option (#7645)
README: add R&D100 badge (#7641)
.github: conditionally evaluate testenv build strategy (#7639)
.github: add “all” keyword to rebuild all testenv containers in workflow (#7586)
ci: fix push of flux-core:latest and fluxoroma docker images (#7608)
t: do not use “python” in command similarity test (#7610)