Server

• [Backups] fixed issue with deleting multiple blobs on Azure when retention policy is executed
• [Backups] fixed issue with executing retention policy on Azure when remote folder name is empty
• [Backups] fixed the ability to test credentials on server-wide backups
• [Cluster] fixed issue with excessive topology updates from the Client API
• [Cluster] do not move loading idle database to rehab
• [Debug] fixed issue with retrieving thread names in Threads View for some of the threads
• [Encryption] fixed 'unable to decrypt page' error
• [Encryption] fixed recovery process on encrypted storage which could cause data corruption
• [Graph API] do not return duplicate edges for Graph Visualizer
• [Indexes] memory optimizations in Lucene
• [Indexes] fixed race condition between removing or replacing an index and starting or stopping all of the indexes
• [Indexes] changing additional sources should affect index etag which is used to calculate query results caching etag
• [Indexes] expected exceptions should not generate an index error
• [Indexes] decreased the cost of retrieving the data from index stats endpoint
• [Monitoring] exposed SWAP usage on Windows in SNMP
• [Monitoring] added managed memory, unmanaged memory, encryption buffers memory in use and encryption buffers memory in pool to SNMP
• [Replication] fixed NRE that could happen if there are 2 tombstones with identical ID but different collection
• [Replication] fixed NRE that could happen if we are deleting the database
• [Revisions] fixed issue with creating a revision when only Resolved flag was present in deleted document
• [Revisions] properly set flags during putting deleted revision from a cluster transaction
• [.NET Core] updated to 3.1.12

Client API

• [Querying] wrap next binary expression after negation in sub clauses
• [Subscriptions] fixed ObjectDisposedException that could occur when disposing subscription worker multiple times
• [Subscriptions] fixed JavaScript translation for Id property and Load, allow to use member init
• [Subscriptions] do not redirect to node with failures

Server

• [Encryption] Fixing the recovery process on storage startup which could cause overwrite of valid data and result in "Unable to decrypt page" error
• [Indexing] Fixing internals in Lucene to prevent from killing the server by an unhandled exception

Server

• [Alerts] Using standard deviation for Low swap size warning
• [Backups] Fixing ocasionally happening problem that backups were not triggered
• [Backups] Fixing error handling for backups to S3
• [Backups] Added Backup.TempPath configuration option
• [Cluster] Prevent concurrent bootstrap
• [Cluster] Cluster observer will move node to rehab upon large gap from the other nodes
• [Cluster] Fixing missing revisions from cluster transactions
• [Cluster] Limiting cluster log truncation by time
• [Cluster] Promote from rehab with indexes that were explicitly disabled
• [Cluster] Stay in rehab with index error
• [Debug] Adding /admin/stats end point to Debug Package
• [Docker] Updating docker base image
• [ETL] Fixing IndexOutOfRangeException while iterating the ETL processes what could result in process crash
• [Indexing] Fixing partitioning in Bloom Filters
• [Indexing] Fixing JS map-reduce indexes when grouping by nested object
• [Indexing] Adding support for complex reduce keys in JS map-reduce indexes
• [Indexing] Fixing the index replacement behavior if any error happened meanwhile
• [Indexing] Improving memory management in Lucene to reduce GC cost
• [Indexing] Fixing CreateField returning a single result when passing the same field name
• [Indexing] Increasing default value of Indexing.Encrypted.TransactionSizeLimitInMb configuration option to 96 MB
• [Linux] Fixing SWAP detection on HDD over SSD in Posix systems when NVMe SSD drives are available
• [Querying] Fixing metadata projection returning LastModified in incorrect format
• [Replication] Avoiding the update of sibling etag on new connections
• [Replication] Fixing the issue with change vector is not updated after replication
• [Replication] Fixing issue that resolving document conflict in Studio removed the attachment
• [Replication] Fixing issue with missing attachment breaking the replication
• [Replication] Fixing duplicate attachments problem in conflicted documents
• [Replication] Checking conflict status for attachment and deleted attachment which caused infinite loop
• [Replication/Smuggler]Adding unused database Ids to import/export for preventing "conflict" in import destination cluster replication
• [Revisions] Fixing issue that deleting a document with Resolved flag created a revision
• [Revisions] Fixing unhandled cases of conflicts in revisions
• [Subscriptions] Fixing the subscription behavior on SubscriptionDoesNotBelongToNodeException
• [Subscriptions] Fixing calculation of redirect node in case of failover
• [Voron] Fixing the validation of overflow pages during the storage recovery process on startup
• [Voron] Fixing possible AccessViolationException in when deleting entries from fixed size trees
• [Voron] Fixing NRE on attempt to get temp page from DecompressionBuffersPool
• [Voron] Deleting large journals instead of adding them to recycle pool to speed up the startup time
• [Voron] Adding cleanup of Temp directory on storage startup
• [Voron] Fixing seeking to a record when using startAfter parameter
• [.NET Core] Updated to .NET Core 3.1.11
• Improved error handling in timer threads

Client API

• [Changes API] Fixing changes API interal operation so it should use the same node as the operation
• [Changes API] Marking Changes API connection state as faulted if failed to initialize
• [Operations] Fixing WaitForCompletion throwing InvalidOperationException for RevertRevisionsOperation
• [Querying] Adding option to project the last modified date from queries
• [Querying] Fixing calculation the hash of complex objects when querying that caused query hangs
• [Querying] Support TimeSpan in projections
• Fixing backward compatibility of the health check endpoint
• Fixing issue when using lazy query + aggressive caching returned Index does not exists exception
• Better exception for actions that require database but none was specified via parameter or there is no default one
• Properly detecting changes in HasChanged when we have deletes

Studio

• Server-wide backup view fix text alignment
• Adding navigation when clicking the backup alert
• Fixing hight CPU usage on the dashboard
• Auto-reconnect to web socket in Admin Logs & Traffic Watch
• When node is passive and license is not activated, stating so explicitly on the License View

Server

• [Querying] fixed endless query issue when optimized IN is done against more than 128 items inside the IN operator
• [Threading] fix race condition in background workers that could occur under high memory conditions that could result in background task not ending
• [Storage] fixed possible NRE in decompression buffers that could occur under low disk space conditions
• [.NET Core] updated to 3.1.10

Client API

• [Querying] fixed possible infinite recursion that could occur during query hash calculation
• [Querying] fixed issue with hashing parameter of type 'Type'

Studio

• [About] disable renew license button when user does not have sufficient privileges
• [Backups] allow to export revisions even when revision configuration is disabled
• [Ongoing Tasks] fixed dirty flag behavior

Server

• [Backup] allow to export and import revisions without a configuration set
• [Backup] fixed issue with backups not starting after being moved by the cluster
• [Backup] fixed NRE when exporting only Subscriptions
• [Configuration] added 'Server.ThreadPool.MinWorkerThreads' and 'Server.ThreadPool.MinCompletionPortThreads'
• [Configuration] added 'Server.ThreadPool.MaxWorkerThreads' and 'Server.ThreadPool.MaxCompletionPortThreads'
• [Configuration] added 'Storage.Encrypted.DisableBuffersPooling'
• [Configuration] added 'PerformanceHints.Memory.MinSwapSizeInMb'
• [Client Configuration] reduced number of Client API updates
• [Indexing] fixed issues with creating WKT bases spatial fields in JavaScript indexes
• [Monitoring] added TCP connections OID to SNMP
• [Performance] added minimum SWAP size performance hint
• [Querying] increased performance of queries containing excessive number of parameters in 'in' clause
• [RQL] support for using 'search' on 'id()'
• [Replication] fixed issue with Pull Replication sinks going offline when there is work to be done still
• [Replication] preserve the order of replicated items when destination has revisions configuration
• [Threading] increased default number of Thread Pool min threads to 4xCPU on x64 and 2xCPU on x86
• [.NET Core] updated to 3.1.9

Client API

• [Certificates] added 'EditClientCertificateOperation'
• [HTTP] using lightier endpoint to perform healthchecks
• [Querying] properly calculate hash for complex objects in query parameters (e.g. when facet options are used)
• [Session] properly handle already included docs when Lazy Loading is used
• added 'AsyncHelpers.UseTaskAwaiterWhenNoSynchronizationContextIsAvailable' option

Studio

• [Database Record] fixed issues with editing database record that contains nested fields
• [Support] display proper support plan when running on RavenDB Cloud