Release notes for Grafana 7.4.0

Features and enhancements

AlertListPanel: Add options to sort by Time(asc) and Time(desc). #29764, @dboslee
AlertListPanel: Changed alert url to to go the panel view instead of panel edit. #29060, @zakiharis
Alerting: Add support for Sensu Go notification channel. #28012, @nixwiz
Annotations: Remove annotation_tag entries as part of annotations cleanup. #29534, @dafydd-t
Azure Monitor: Add Microsoft.Network/natGateways. #29479, @JoeyLemur
Backend plugins: Support Forward OAuth Identity for backend data source plugins. #27055, @billoley
CloudWatch: Add 'EventBusName' dimension to CloudWatch 'AWS/Events' namespace. #28402, @tomdaly
CloudWatch: Add support for AWS DirectConnect ConnectionErrorCount metric. #29583, @haeringer
CloudWatch: Add support for AWS/ClientVPN metrics and dimensions. #29055, @marefr
CloudWatch: Added HTTP API Gateway specific metrics and dimensions. #28780, @karlatkinson
Currency: Adds Indonesian IDR currency. #28363, @hiddenrebel
Dashboards: Delete related data (permissions, stars, tags, versions, annotations) when deleting a dashboard or a folder. #28826, @AgnesToulet
Dependencies: Update angularjs to 1.8.2. #28736, @torkelo
Docker: Use root group in the custom Dockerfile. #28639, @chugunov
Elasticsearch: Add Moving Function Pipeline Aggregation. #28131, @simianhacker
Elasticsearch: Add Support for Serial Differencing Pipeline Aggregation. #28618, @simianhacker
Elasticsearch: Deprecate browser access mode. #29649, @Elfo404
Elasticsearch: Interpolate variables in Filters Bucket Aggregation. #28969, @Elfo404
Elasticsearch: Support extended stats and percentiles in terms order by. #28910, @simianhacker
Elasticsearch: View in context feature for logs. #28764, @simianhacker
Explore/Logs: Alphabetically sort unique labels, labels and parsed fields. #29030, @ivanahuckova
Explore/Logs: Update Parsed fields to Detected fields. #28881, @ivanahuckova
Explore/Prometheus: Update default query type option to "Both". #28935, @ivanahuckova
Field overrides: Added matcher to match all fields returned by a specific query. #28872, @mckn
Instrumentation: Add histograms for database queries. #29662, @dafydd-t
LogsPanel: Don't show scroll bars when not needed. #28972, @aocenas
Loki/Explore: Add query type selector. #28817, @ivanahuckova
Loki: Add query type and line limit to query editor in dashboard. #29356, @ivanahuckova
Loki: Retry web socket connection when connection is closed abnormally. #29438, @ivanahuckova
Middleware: Add CSP support. #29740, @aknuds1
OAuth: Configurable user name attribute. #28286, @alexanderzobnin
Prometheus: Improve autocomplete performance and remove disabling of dynamic label lookup. #30199, @ivanahuckova
Prometheus: Use customQueryParameters for all queries. #28949, @alexbumbacea
Security: Prefer server cipher suites for http2. #29379, @bergquist
Security: Remove insecure cipher suit as default option. #29378, @bergquist
StatPanels: Add new calculation option for percentage difference. #26369, @jedstar
StatPanels: Change default stats option to "Last (not null)". #28617, @ryantxu
Table: migrate old-table config to new table config. #30142, @jackw
Templating: Custom variable edit UI, change options input into textarea. #28322, @darrylsepeda
TimeSeriesPanel: The new graph panel now supports y-axis value mapping. #30272, @torkelo
Tracing: Tag spans with user login and datasource name instead of id. #29183, @bergquist
Transformations: Added new transform for excluding and including rows based on their values. #26884, @Totalus
Variables: Add deprecation warning for value group tags. #30160, @torkelo
Variables: Added __user.email to global variable. #28853, @mckn
Variables: Adds description field. #29332, @hugohaggmark
Variables: Adds variables inspection. #25214, @hugohaggmark
Variables: New Variables are stored immediately. #29178, @hugohaggmark

Bug fixes

API: Query database from /api/health endpoint. #28349, @ceh
Alerting: Return proper status code when trying to create alert notification channel with duplicate name or uid. #28043, @jgulick48
Auth: Fix default maximum lifetime an authenticated user can be logged in. #30030, @papagian
Backend: Fix IPv6 address parsing erroneous. #28585, @taciomcosta
Cloudwatch: Fix issue with field calculation transform not working properly with Cloudwatch data. #28761, @torkelo
Dashboards: Hide playlist edit functionality from viewers and snapshots link from unauthenticated users. #28992, @jackw
Data source proxy: Convert 401 HTTP status code from data source to 400. #28962, @aknuds1
Decimals: Improving auto decimals logic for high numbers and scaled units. #30262, @torkelo
Elasticsearch: Fix date histogram auto interval handling for alert queries. #30049, @simianhacker
Elasticsearch: Fix index pattern not working with multiple base sections. #28348, @tomdaly
Graph: Fixes stacking issues like floating bars when data is not aligned. #29051, @torkelo
Image uploader: Fix uploading of images to GCS. #26493, @gastonqiu
Influx: Fixes issue with many queries being issued as you type in the variable query field. #29968, @dprokop
Logs Panel: Fix inconsistent highlighting. #28971, @ivanahuckova
Logs Panel: Fixes problem dragging scrollbar inside logs panel. #28974, @aocenas
Loki: Fix hiding of series in table if labels have number values. #30185, @ivanahuckova
Loki: Lower min step to 1ms. #30135, @ivanahuckova
Loki: Timeseries should not produce 0-values for missing data. #30116, @davkal
Plugins: Fix panic when using complex dynamic URLs in app plugin routes. #27977, @cinaglia
Prometheus: Fix link to Prometheus graph in dashboard. #29543, @ivanahuckova
Provisioning: Build paths in an os independent way. #29143, @amattheisen
Provisioning: Fixed problem with getting started panel being added to custom home dashboard. #28750, @torkelo
SAML: Fixes bug in processing SAML response with empty element by updating saml library (Enterprise). #29991, @alexanderzobnin
SQL: Define primary key for tables without it. #22255, @azhiltsov
Tracing: Fix issue showing more than 300 spans. #29377, @zoltanbedi
Units: Changes FLOP/s to FLOPS and some other rates per second units get /s suffix. #28825, @Berbe
Variables: Fixes Constant variable persistence confusion. #29407, @hugohaggmark
Variables: Fixes Textbox current value persistence. #29481, @hugohaggmark
Variables: Fixes loading with a custom all value in url. #28958, @hugohaggmark
Variables: Fixes so clicking on Selected in drop down will exclude All value from selection. #29844, @hugohaggmark

Breaking changes

The default menu placement for the Select component was previously set to auto. This meant that the drop down for the select would open downwards/upwards depending on available space. We've noticed that the auto doesn't always work when the drop down for Select is opened upwards so therefore we've changed the default to bottom instead. Issue #29837

Constant variables

In order to minimize the confusion with Constant variable usage, we've removed the ability to make Constant variables visible. This change will also migrate all existing visible Constant variables to Textbox variables because which we think this is a more appropriate type of variable for this use case. Issue #29407

Plugin compatibility

We have upgraded AngularJS from version 1.6.6 to 1.8.2. Due to this upgrade some old angular plugins might stop working and will require a small update. This is due to the deprecation and removal of pre-assigned bindings. So if your custom angular controllers expect component bindings in the controller constructor you need to move this code to an $onInit function. For more details on how to migrate AngularJS code open the migration guide and search for pre-assigning bindings.

In order not to break all angular panel plugins and data sources we have some custom angular inject behavior that makes sure that bindings for these controllers are still set before constructor is called so many old angular panels and data source plugins will still work. Issue #28736

Deprecations

Query variable value group tags

This option to group query variable values into groups by tags has been an experimental feature since it was introduced. It was introduced to work around the lack of tags support in time series databases at the time. Now that tags (ie. labels) are the norm there is no longer any great need for this feature. This feature will be removed in Grafana v8 later this year. Issue #30160

Plugin development fixes & changes

Field Config API: Add ability to hide field option or disable it from the overrides. #29879, @dprokop
Select: Changes default menu placement for Select from auto to bottom. #29837, @hugohaggmark
Grafana-ui: Fix collapsible children sizing. #29776, @aocenas
DataSourceWithBackend: Throw error if health check fails in DataSourceWithBackend. #29743, @aocenas
FieldColor: Handling color changes when switching panel types. #28875, @dprokop
CodeEditor: Added support for javascript language. #28818, @ae3e
grafana/toolkit: Allow builds with lint warnings. #28810, @dprokop
grafana/toolkit: Drop console and debugger statements by default when building plugin. #28776, @dprokop
Grafana-UI: Add Card component. #28216, @Clarity-89
FieldConfig: Implementation slider editor (#27592). #28007, @isaozlerfm
MutableDataFrame: Remove unique field name constraint and values field index and unused/seldom used stuff. #27573, @torkelo

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