Server

• [Backups] fixed issue with executing Backup Retention policies on Azure
• [Backups] allow to restore a document when collection was changed in the same incremental backup
• [Backups] fixed possible memory leak during import when a lot of compare exchange values are being imported
• [Debug] fixed issue with capturing stacktraces for entire cluster
• [Debug] gixed start date of a cloned transaction in /admin/debug/txinfo endpoint
• [Databases] fixed NRE taht could happen if database was created with Client Configuration set
• [Indexes] release temporary files on low memory to reduce the memory pressure further
• [Indexes] fixed a race between creating a new auto index and deleting the superseded one
• [Indexes] fixed usage of concurrent indexes semaphore to avoid NRE
• [Replication] fixed memory allocation when handling tombstones as a conflicts resolutions
• [Replication] fixed NRE on refresh of document that was added in cluster transaction
• [Voron] making sure that we will not remove currently used scratch buffer file from the list of active scratches during transaction rollback
• [Voron] making the acquirement and usage of a pager state more robust to avoid accessing already disposed pager which could result in AVE
• [Voron] preventing a racy access and dispose of a scrach file between the storage cleanup and creation of a new transaction
• [Voron] fixing the case that after the import of a database we didn't flush all journals if there was no activity on a database what resulted in large number of scratch files
• [Voron] using a correct pager state when prefetching segments
• [.NET Core] updated to .NET Core 3.1.15

Client API

• [Session] fixed caching when Lazy is used
• [Session] properly incrementing number of requests when attachments and revisions are used
• [Smuggler] fixed possibility to context leaking during Import
• [Querying] added support for aggregation queries when raw query is used

Studio

• [Indexes] expose index wait time on performance graph when max number of concurrent indexes is set
• [Indexes] fixed issue with displaying tooltips on performance graph
• [Refresh] fixed issue with updating the refresh frequency
• [Traffic Watch] display also seconds in request time
• [Traffic Watch] added TCP connections

Server

• [Indexes] fixed issue where index replacement, therefore index update, could cause index to become paused
• [Indexes] fixed possible deadlock in indexing that could occur when 'Indexing.MaxNumberOfConcurrentlyRunningIndexes' is used
• [TCP] gently closing TCP TestConnection and TCP Ping to avoid moving into CLOSE_WAIT state
• [.NET Core] updated to 3.1.14

Server

• [Backup] Fixed the restore of tombstones from a backup
• [Cluster] Added endpoint to remove entry from Raft log
• [Configuration] Added Indexing.MaxNumberOfConcurrentlyRunningIndexes configuration option (default: null - no limit)
• [Configuration] Increased dafault value for Indexing.Encrypted.TransactionSizeLimitInMb configuration option depending on the amount of available memory:
  • <= 1GB of RAM or running in 32bits - 96MB
  • <= 4GB of RAM - 128MB
  • <= 16GB of RAM - 256MB
  • <= 64GB of RAM - 512MB
  • > 64GB of RAM - 1024MB
• [Indexing] Fixed the behavior of recreating indexing writer upon every commit
• [Indexing] Fixed handling for ERROR_COMMITMENT_LIMIT to treat is as OutOfMemory
• [Indexing] Reduce amount of IO needed to deal with temporary files
• [Indexing] Added ability to limit number of concurrently running indexes to reduce the memory and IO usage (Indexing.MaxNumberOfConcurrentlyRunningIndexes)
• [Indexing] Fixed invalid memory allocation in Lucene
• [Querying] Better exception on invalid JS Date
• [Querying] Ensured that query execution is stopped if a HTTP request is aborted
• [SNMP] Exposed number of disabled, encrypted and current node databases
• [SQL ETL] Added handling for conversion of GUID to UUID when loading records to PostgreSQL
• [Tombstones] Added endpoints allowing to force cleanup of tombstones and check the cleanup state
• [Voron] Fixed unhandled case in page splitting of compressed pages. This applies to map-reduce indexes and could result in "Encountered empty page which isn't a root" error.
• [Voron] Ensured that we report an alert if an error happened during the flush of data and we recreate the backgroud task.
• [Voron] Fixed unreleased allocations in scratch buffers which made that scratch files were never cleaned up.
• [.NET Core] Updated to 3.1.13

Client

• [Changes API] Fixed detection for database creation/deletion while already suscribed
• [Session] Consider the index referenced collections on WaitForIndexesAfterSaveChanges
• [Conventions] Added WaitForIndexesAfterSaveChangesTimeout, WaitForReplicationAfterSaveChangesTimeout and WaitForNonStaleResultsTimeout conventions (default: 15 seconds)

Embedded

• Added support for wildcards (x) in the ServerOptions.FrameworkVersion

Studio

• [Querying] Added id() field to the list of index terms

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