--- title: v5 slug: changelog/v5 docTags: createdAt: 2025-12-23T08:32:18.367Z --- ## v5.2.8 Released on 23/02/2023 ### Bug fixes - Fixed array datatype as event trigger measurement crashing the historian ## v5.2.7 Released on 07/02/2023 ### Bug fixes - Joined periodic event views were not filtered by event type UUID - Fixed recalculation causing query timeouts ## v5.2.6 Released on 19/01/2023 ### Bug fixes - Allow multiple failover configuration with the same ip/port - Allow setting the stop delay to zero for the failover collector - Fixed a bug where the time series database name was not displayed when searching for measurements ## v5.2.5 Released on 10/01/2023 ### Feature - Allow the use of json, hex and base64 tengo libraries and added fmt.sprintf function ## v5.2.4 Released on 03/01/2023 ### Bug fixes - Fixed a bug where event workers with long grace periods didn't progress ## v5.2.3 Released on 11/12/2022 ### Bug fixes - Fixed failover collector not writing points ## v5.2.2 Released on 09/12/2022 ### Bug fixes - Fixed nil pointer exception - Fixed missing function in tengo scripting library ## v5.2.1 ### Features - Improved event processing efficiency by adding a partial index on open events - Added an option to sampled calculation that allows running the script on partial or missing data ## v5.2.0 Released on 04/11/2022 \{\{\< notice warning "Watch out!" >}} As of v5.2.0 a read only user is mandatory for all time series databases. If this user has not been configured in the previous versions we urge you to do so for the correct functioning of the Historian. Until a read only user is set up correctly you might experience problems with the event module, calculations and the measurement data preview in the frontend. All other functions such as data collection will continue normal operation. After the read only users have been set up all functionality will resume. The databases which require attention are marked red in the time series databases overview. \{\{\< /notice >}} \{\{\< notice warning "Watch out!" >}} As of v5.2.0 the internal influx database `_internal_factry` is onboarded with a retention policy of 12 weeks in order to reduce disk usage. We recommend customers running earlier versions to alter the retention policy of the influx database `_internal_factry` to 12 weeks. You can find instruction [here](#) on how to achieve this. \{\{\< /notice >}} ### Features ### Time series databases - In order to reduce disk usage the internal time series database for the historian is now created in the wizard with a default retention policy of 12 weeks - Use read-only user for querying the time series databases ### OPC-UA Alarms & Conditions A new measurement datatype `raw` was added to support the new `event` data collection method for OPC-UA collectors. ### Changes - Added filter parameters to the URL of the event overview page - Updated measurement data preview visualization - Different colors per series - Tooltip on points with timestamp and value - Text inputs trim whitespaces - Added health status to the calculation collector - Separate logs for the calculation collector - A failover collector waiting now has its health as `Idle` instead of `Paused` - Added StopDelay to failover collector settings, this is how long the failover collector will collect after the main collector returns ### Bug fixes - Fix parsing of raw query responses without timestamps - Added message to indicate if an empty bulk upload in the measurements page - Added a datatype check when calculating event properties - Fixed incorrect datatype in time series query response - Fixed time series database form errors - Reduced response size when getting measurements significantly ## v5.1.6 Released on 14/10/2022 ### Changes - Attempt to update buffer path permissions before exiting ## v5.1.5 Released on 06/10/2022 ### Changes - Added support for JSON input in measurement/collector settings ## v5.1.4 Released on 12/09/2022 ### Bug fixes - Simple properties with no data were stored incorrectly ## v5.1.3 Released on 12/09/2022 ### Bug fixes - Newline the tags of points written to influx1.x were not escaped correctly ## v5.1.2 Released on 08/09/2022 ### Bug fixes - Fixed a bug where events where not processed properly if the number of open events per event configuration exceeded 100 - Faster startup when event processing is enabled ## v5.1.1 Released on 06/09/2022 ### Bug fixes - Fixed response conversion for influx2 queries ## v5.1.0 Released on 31/08/2022 ### Features ### Failover collector - Add configuration options for [collector failover](#) ### Time series databases - Added support for Influx v2.x - Added server side buffering for the calculation collector ### Advanced collector settings - Most environment variables for the collectors have been removed and are now available to be configured in the historian frontend as [advanced collector settings](#) ### Changes - Allow renaming of collectors - Measurement filters are now used in the excel export - Removed measurement bulk upload with JSON - Added a confirmation step to the measurement bulk upload - Added a refresh button to the data preview for measurements - Changed the default time period from 6h to 5m for the measurement preview - Prefill filtered database/collector in create measurement - Added a clone button for measurements/calculations - Added a 'Good points only' option to historian event property - Made the order of setting columns in measurement excel export more consistent ### Bug fixes - Measurement logs search input - Fixed created\_at and created\_by getting reset on update for some objects - Fixed the measurement validation schema not updating correctly when creating a measurement - Fixed a bug where the calculations where reloaded when selecting a calculation - Fixed a visual bug when setting a measurement/collector setting to 0 - Fixed menu icons in Firefox ## v5.0.2 Released on 25/08/2022 ### Bug fixes - Fixed bug where input measurement for calculation selects wrong one if measurements with same name exists in another database ## v5.0.1 Released on 23/07/2022 ### Bug fixes - The major version of the go modules has been bumped to V5 ## v5.0.0 Released on 14/07/2022 ### Features ### General - Measurements have a preview pane which displays the most recent historical data for that measurement - Improved pagination of logs and audit logs ### Event detection module - We announce the addition of the [Event Detection module](#)! This enables detecting time-based events and aggregate values on top op these events using process data. ### Calculations - Performing operations on existing measurements is added by means of [Calculations](#), which output their results in new separate measurements stored as new time series data.