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Percona Server for MongoDB 5.0.5-4


December 28, 2021


Installing Percona Server for MongoDB

Percona Server for MongoDB 5.0.5-4 is an enhanced, source-available, and highly-scalable database that is a fully-compatible, drop-in replacement for MongoDB 5.0.5 Community Edition. It supports MongoDB 5.0.5 protocols and drivers.


One of the main new features for MongoDB v5.0 is live resharding. Be aware that there have been multiple bugs related to this new feature through the releases to date (5.0.0 through 5.0.5). Please test thoroughly in your development and staging environments and use this feature on live production systems with caution.

Release Highlights

The bug fixes and improvements, provided by MongoDB and included in Percona Server for MongoDB, are the following:

  • SERVER-59858 - Added histograms to track latency for tasks scheduled on the reactor thread.

  • SERVER-61483 - Fixed an issue when resharding a collection that could cause data inconsistency (lost writes) due to incorrect actions by the ReshardingCoordinator and attempts to commit anyway. Also could cause fassert() to config server primary.

  • SERVER-61482 - Fixed an issue with stalls on the config server. Updates to config server during resharding may wait too long for oplog slot thus stalling replication on config server indefinitely.

  • SERVER-61633 Fixed a resharding issue relating to RecipientStateMachine that caused the server to crash

Find the full list of changes in the MongoDB 5.0.5 Community Edition release notes.

Bugs Fixed

  • PSMDB-756: Fixed an issue with unmet dependencies for installing MongoDB on Debian (Thanks to Stefan Schlesi for reporting this issue)