NEWS

This file describes changes in recent versions of Slurm. It primarily
documents those changes that are of interest to users and administrators.

* Changes in Slurm 17.11.6
==========================
 -- CRAY - Add slurmsmwd to the contribs/cray dir.
 -- sview - fix crash when closing any search dialog.
 -- Fix initialization of variable in stepd when using native x11.
 -- Fix reading slurm_io_init_msg to handle partial messages.
 -- Fix scontrol create res segfault when wrong user/account parameters given.

* Changes in Slurm 17.11.5
==========================
 -- Fix cloud nodes getting stuck in DOWN+POWER_UP+NO_RESPOND state after not
    responding by ResumeTimeout.
 -- Add job's array_task_cnt and user_name along with partitions
    [max|def]_mem_per_[cpu|node], max_cpus_per_node, and max_share with the
    SHARED_FORCE definition to the job_submit/lua plugin.
 -- srun - fix for SLURM_JOB_NUM_NODES env variable assignment.
 -- sacctmgr - fix runaway jobs identification.
 -- Fix for setting always the correct status on job update in mysql.
 -- Fix issue if running with an association manager cache (slurmdbd was down
    when slurmctld was started) you could loose QOS usage information.
 -- CRAY - Fix spec file to work correctly.
 -- Set scontrol exit code to 1 if attempting to update a node state to DRAIN
    or DOWN without specifying a reason.
 -- Fix race condition when running with an association manager cache
    (slurmdbd was down when slurmctld was started).
 -- Print out missing SLURM_PERSIST_INIT slurmdbd message type.
 -- Fix two build errors related to use of the O_CLOEXEC flag with older glibc.
 -- Add Google Cloud Platform integration scripts into contribs directory.
 -- Fix minor potential memory leak in backfill plugin.
 -- Add missing node flags (maint/power/etc) to node states.
 -- Fix issue where job time limits may end up at 1 minute when using the
    NoReserve flag on their QOS.
 -- Fix security issue in accounting_storage/mysql plugin by always escaping
    strings within the slurmdbd. CVE-2018-7033.

* Changes in Slurm 17.11.4
==========================
 -- Add fatal_abort() function to be able to get core dumps if we hit an
    "impossible" edge case.
 -- Link slurmd against all libraries that slurmstepd links to.
 -- Fix limits enforce order when they're set at partition and other levels.
 -- Add slurm_load_single_node() function to the Perl API.
 -- slurm.spec - change dependency for --with lua to use pkgconfig.
 -- Fix small memory leaks in node_features plugins on reconfigure.
 -- slurmdbd - only permit requests to update resources from operators or
    administrators.
 -- Fix handling of partial writes in io_init_msg_write_to_fd() which can
    lead to job step launch failure under higher cluster loads.
 -- MYSQL - Fix to handle quotes in a given work_dir of a job.
 -- sbcast - fix a race condition that leads to "Unspecified error".
 -- Log that support for the ChosLoc configuration parameter will end in Slurm
    version 18.08.
 -- Fix backfill performance issue where bf_min_prio_reserve was not respected.
 -- Fix MaxQueryTimeRange checks.
 -- Print MaxQueryTimeRange in "sacctmgr show config".
 -- Correctly check return codes when creating a step to check if needing to
    wait to retry or not.
 -- Fix issue where a job could be denied by Reason=MaxMemPerLimit when not
    requesting any tasks.
 -- In perl tools, fix for regexp that caused extra incorrectly shown results.
 -- Add some extra locks in fed_mgr to be extra safe.
 -- Minor memory leak fixes in the fed_mgr on slurmctld shutdown.
 -- Make sreport job reports also report duplicate jobs correctly.
 -- Fix issues restoring certain Partition configuration elements, especially
    when ReconfigFlags=KeepPartInfo is enabled.
 -- Don't add TRES whose value is NO_VAL64 when building string line.
 -- Fix removing array jobs from hash in slurmctld.
 -- Print out missing user messages from jobsubmit plugin when srun/salloc are
    waiting for an allocation.
 -- Handle --clusters=all as case insensitive.
 -- Only check requested clusters in federation when using --test-only
    submission option.
 -- In the federation, make it so you can cancel stranded sibling jobs.
 -- Silence an error from PSS memory stat collection process.
 -- Requeue jobs allocated to nodes requested to DRAIN or FAIL if nodes are
    POWER_SAVE or POWER_UP, preventing jobs to start on NHC-failed nodes.
 -- Make MAINT and OVERLAP resvervation flags order agnostic on overlap test.
 -- Preserve node features when slurmctld daemons reconfigured including active
    and available KNL features.
 -- Prevent creation of multiple io_timeout threads within srun, which can
    lead to fatal() messages when those unexpected and additional mutexes are
    destroyed when srun shuts down.
 -- burst_buffer/cray - Prevent use of "#DW create_persistent" and
    "#DW destroy_persistent" directives available in Cray CLE6.0UP06. This
    will be supported in Slurm version 18.08. Use "#BB" directives until then.
 -- Fix task/cgroup affinity to behave correctly.
 -- FreeBSD - fix build on systems built with WITHOUT_KERBEROS.
 -- Fix to restore pn_min_memory calculated result to correctly enforce
    MaxMemPerCPU setting on a partition when the job uses --mem.
 -- slurmdbd - prevent infinite loop if a QOS is set to preempt itself.
 -- Fix issue with log rotation for slurmstepd processes.

* Changes in Slurm 17.11.3-2
==========================
 -- Revert node_features changes in 17.11.3 that lead to various segfaults on
    slurmctld startup.

* Changes in Slurm 17.11.3
==========================
 -- Send SIG_UME correctly to a step.
 -- Sort sreport's reservation report by cluster, time_start, resv_name instead
    of cluster, resv_name, time_start.
 -- Avoid setting node in COMPLETING state indefinitely if the job initiating
    the node reboot is cancelled while the reboot in in progress.
 -- Scheduling fix for changing node features without any NodeFeatures plugins.
 -- Improve logic when summarizing job arrays mail notifications.
 -- Add scontrol -F/--future option to display nodes in FUTURE state.
 -- Fix REASONABLE_BUF_SIZE to actually be 3/4 of MAX_BUF_SIZE.
 -- When a job array is preempting make it so tasks in the array don't wait
    to preempt other possible jobs.
 -- Change free_buffer to FREE_NULL_BUFFER to prevent possible double free
    in slurmstepd.
 -- node_feature/knl_cray - Fix memory leaks that occur when slurmctld
    reconfigured.
 -- node_feature/knl_cray - Fix memory leak that can occur during normal
    operation.
 -- Fix srun environment variables for --prolog script.
 -- Fix job array dependency with "aftercorr" option and some task arrays in
    the first job fail. This fix lets all task array elements that can run
    proceed rather than stopping all subsequent task array elements.
 -- Fix potential deadlock in the slurmctld when using list_for_each.
 -- Fix for possible memory corruption in srun when running heterogeneous job
    steps.
 -- Fix job array dependency with "aftercorr" option and some task arrays in
    the first job fail. This fix lets all task array elements that can run
    proceed rather than stopping all subsequent task array elements.
 -- Fix output file containing "%t" (task ID) for heterogeneous job step to
    be based upon global task ID rather than task ID for that component of the
    heterogeneous job step.
 -- MYSQL - Fix potential abort when attempting to make an account a parent of
    itself.
 -- Fix potentially uninitialized variable in slurmctld.
 -- MYSQL - Fix issue for multi-dimensional machines when using sacct to
    find jobs that ran on specific nodes.
 -- Reject --acctg-freq at submit if invalid.
 -- Added info string on sh5util when deleting an empty file.
 -- Correct dragonfly topology support when job allocation specifies desired
    switch count.
 -- Fix minor memory leak on an sbcast error path.
 -- Fix issues when starting the backup slurmdbd.
 -- Revert uid check when requesting a jobid from a pid.
 -- task/cgroup - add support to detect OOM_KILL cgroup events.
 -- Fix whole node allocation cpu counts when --hint=nomultihtread.
 -- Allow execution of task prolog/epilog when uid has access
    rights by a secondary group id.
 -- Validate command existence on the srun *[pro|epi]log options
    if LaunchParameter test_exec is set.
 -- Fix potential memory leak if clean starting and the TRES didn't change
    from when last started.
 -- Fix for association MaxWall enforcement when none is given at submission.
 -- Add a job's allocated licenses to the [Pro|Epi]logSlurmctld.
 -- burst_buffer/cray: Attempts by job to create persistent burst buffer when
    one already exists owned by a different user will be logged and the job
    held.
 -- CRAY - Remove race in the core_spec where we add the slurmstepd to the
    job container where if the step was canceled would also cancel the stepd
    erroneously.
 -- Make sure the slurmstepd blocks signals like SIGTERM correctly.
 -- SPANK - When slurm_spank_init_post_opt() fails return error correctly.
 -- When revoking a sibling job in the federation we want to send a start
    message before purging the job record to get the uid of the revoked job.
 -- Make JobAcctGatherParams options case-insensitive. Previously, UsePss
    was the only correct capitialization; UsePSS or usepss were silently
    ignored.
 -- Prevent pthread_atfork handlers from being added unnecessarily after
    'scontrol reconfigure', which can eventually lead to a crash if too
    many handlers have been registered.
 -- Better debug messages when MaxSubmitJobs is hit.
 -- Docs - update squeue man page to describe all possible job states.
 -- Prevent orphaned step_extern steps when a job is cancelled while the
    prolog is still running.

* Changes in Slurm 17.11.2
==========================
 -- jobcomp/elasticsearch - append Content-Type to the HTTP header.
 -- MYSQL - Fix potential abort of slurmdbd when job has no TRES.
 -- Add advanced reservation flag of "REPLACE_DOWN" to replace DOWN or DRAINED
    nodes.
 -- slurm.spec-legacy - add missing libslurmfull.so to slurm.files.
 -- Fix squeue job ID filtering for pending job array records.
 -- Fix potential deadlock in _run_prog() in power save code.
 -- MYSQL - Add dynamic_offset in the database to force range for auto
    increment ids for the tres_table.
 -- MYSQL - Fix fallout from MySQL auto increment bug, see RELEASE_NOTES,
    only affects current 17.11 users tracking licenses or GRES in the database.
 -- Refactor logging logic to avoid possible memory corruption on non-x86
    architectures.
 -- Fix memory leak when getting jobs from the slurmdbd.
 -- Fix incorrect logic behind MemorySwappiness, and only set the value when
    specified in the configuration.

* Changes in Slurm 17.11.1-2
============================
 -- MYSQL - Make index for pack_job_id

* Changes in Slurm 17.11.1
==========================