############# Release Notes ############# 4.1.1 ===== Fixes ----- * Many short-lived file access metrics were being created. * A completed backup could be improperly marked as incomplete. * In rare scenarios the resolvers could fail to make progress. 4.1.0 ===== Performance ----------- * Significantly improved cluster performance in a wide variety of machine failure scenarios. Features -------- * Clients can now load multiple versions of the client library, and will gracefully switch to the appropriate version when the server is upgraded. * A new operating mode for ``fdbbackup`` writes backup data files into the blob store. * Transactions no longer automatically reset after a successful commit. * Added ability to set network options with environment variables. * Added a new API function for determining the value to which atomic versionstamp operations in a transaction were transformed or would have been transformed. * Improved logic for integrating manually-assigned machine classes with other constraints on role locations. * Added a new machine class ``stateless`` which is the top priority location for resolvers, proxies, and masters. * Added a new machine class ``log`` which is the top priority location for transaction logs. * Trace events are now event metrics that are exposed in Scope. Fixes ----- * A log could attempt to recover from a partially recovered set of logs when fast recovery was enabled. * A rare scenario could cause a crash when a master is recovering metadata from the previous generation of logs. * Streaming mode ``EXACT`` was ignoring the ``target_bytes`` parameter. Bindings -------- * API version updated to 410. See the :ref:`API version upgrade guide ` for upgrade details. Earlier release notes --------------------- * :doc:`4.0 (API Version 400) ` * :doc:`3.0 (API Version 300) ` * :doc:`2.0 (API Version 200) ` * :doc:`1.0 (API Version 100) ` * :doc:`Beta 3 (API Version 23) ` * :doc:`Beta 2 (API Version 22) ` * :doc:`Beta 1 (API Version 21) ` * :doc:`Alpha 6 (API Version 16) ` * :doc:`Alpha 5 (API Version 14) `