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DOCS-14653 generate initial 4.0.26 changelog
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‎source/includes/changelogs/releases/4.0.26.rst

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.. _4.0.26-changelog:
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4.0.26 Changelog
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----------------
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Security
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~~~~~~~~
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:issue:`SERVER-56240` Turn on checkpointing for the keystore Data Store
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Sharding
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~~~~~~~~
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- :issue:`SERVER-48648` Return updated ShardVersion in _configsvrCommitChunkMerge to avoid blind metadata refresh
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- :issue:`SERVER-48653` Return updated ShardVersion in _configsvrCommitChunkSplit to avoid blind metadata refresh
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- :issue:`SERVER-56654` Do not use the collection distributed lock for chunk splits
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- :issue:`SERVER-56779` Do not use the collection distributed lock for chunk merges
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- :issue:`SERVER-56786` There are three routing info refreshes and two chunk scans on the mergeChunks path
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- :issue:`SERVER-58109` The new '_configsvrMergeChunks' path is more expensive than the old one
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Replication
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~~~~~~~~~~~
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- :issue:`SERVER-44316` Log message in InitialSyncer for setting begin applying timestamp is incorrect
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- :issue:`SERVER-55465` Fix Invariant upon failed request for a vote from the current primary in the election dry-run of catchup takeover
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- :issue:`SERVER-56054` Change minThreads value for replication writer thread pool to 0
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Aggregation
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~~~~~~~~~~~
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:issue:`SERVER-41741` Improve robustness of change_streams_shell_helper_resume_token.js
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Build and Packaging
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~~~~~~~~~~~~~~~~~~~
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:issue:`SERVER-50568` Platform Support: Remove Ubuntu18.04 zSeries from 5.0
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Internals
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~~~~~~~~~
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- :issue:`SERVER-40590` Delete KeyedExecutor
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- :issue:`SERVER-53643` Startup can see old version of featureCompatibilityVersion document
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- :issue:`SERVER-53726` Platform Support: Remove RHEL6 zSeries
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- :issue:`SERVER-53728` Platform Support: Remove SLES12 zSeries
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- :issue:`SERVER-55119` Create startup warning indicating that X.509 certificates without SANs are deprecated
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- :issue:`SERVER-56307` The chunk migration "convergence algorithm" is very primitive
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- :issue:`SERVER-56452` Self anchor in PooledLDAPConnection::setup's callback
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- :issue:`SERVER-56501` Add op counters for legacy op codes (OP_QUERY, OP_INSERT, etc.)
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- :issue:`SERVER-57053` Rewriting $nor with a $text predicate to $not is invalid
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- :issue:`SERVER-57057` Reduce routing info refreshes on the mergeChunks path
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- :issue:`SERVER-57064` Log create index and dropIndex(es) on mongos
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- :issue:`SERVER-57145` Invariant failure at OCSPManager::requestStatus
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- :issue:`SERVER-57157` assert serverStatus command works in getBinVersion() jstest helper
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- :issue:`SERVER-57275` Update kmip_server.py to be more verbose
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- :issue:`SERVER-57328` Make ReplsetTest.upgradeSet() tolerant of reelections
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- :issue:`SERVER-57330` Update perf yaml configs for perf and sys-perf to use perf.send
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- :issue:`SERVER-57454` Chunk donor propagates NotMaster error from recipient back to MigrationManager making it to believe donor is not primary
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- :issue:`SERVER-57497` store_retryable_find_and_modify_images_in_side_collection.js should account for a later clustertime in retried findAndModify responses
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- :issue:`SERVER-57564` Increase system timeout duration to >2 hours to allow fio to copy over all files
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- :issue:`SERVER-57691` [4.0 only] Return early in TxnResources if not in WUOW
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- :issue:`SERVER-57897` Add readPrefMode option to benchRun find/findOne ops
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- :issue:`SERVER-57954` Update TPC-C version in sys-perf.yml
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- :issue:`SERVER-58118` Spammy logging when RSM is refreshing all hosts
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- :issue:`SERVER-58191` [Migrate Protocol] Allow delete_during_migrate.js to tolerate chunk migration failures due to timeout in catchup phase in slow variants.
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- :issue:`SERVER-58248` Fix error code when checking if FeatureCompatibilityVersion is majority-committed
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- :issue:`SERVER-58313` Fix package test failure caused by SERVER-55460 backport to v4.2 and v4.0
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‎source/release-notes/4.0-changelog.txt

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:depth: 1
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:class: twocols
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.. include:: /includes/changelogs/releases/4.0.26.rst
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.. include:: /includes/changelogs/releases/4.0.25.rst
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.. include:: /includes/changelogs/releases/4.0.24.rst

‎source/release-notes/4.0.txt

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Minor Releases
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--------------
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.. _4.0.26-release-notes:
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4.0.26 - Upcoming
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~~~~~~~~~~~~~~~~~
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Issues fixed:
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- :issue:`SERVER-57064` Log create index and dropIndex(es) on mongos
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- :issue:`SERVER-56779` Do not use the collection distributed lock for
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chunk merges
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- :issue:`SERVER-56452` Self anchor in PooledLDAPConnection::setup's
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callback
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- :issue:`SERVER-56240` Turn on checkpointing for the keystore Data
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Store
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- :issue:`SERVER-56054` Change minThreads value for replication writer
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thread pool to 0
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- `All JIRA issues closed in 4.0.26
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<https://jira.mongodb.org/issues/?jql=project%20in%20(SERVER%2CTOOLS%2CWT)%20AND%20resolution%3D%27Fixed%27%20and%20fixversion%3D%274.0.26%27>`_
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- :ref:`4.0.26-changelog`
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.. _4.0.25-release-notes:
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4.0.25 - Jun 10, 2021

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