Add change logs for 8.2.0 (#5697)

CHANGES.md

@@ -2,148 +2,110 @@ Changes by Version
 ==================
 Release Notes.
 
-8.1.0
+8.2.0
 ------------------
 #### Project
-* Support Kafka as an optional trace, JVM metrics, profiling snapshots and meter system data transport layer.
-* Support Meter system, including the native metrics APIs and the Spring Sleuth adoption.
-* Support JVM thread metrics.  
+* Support Browser monitoring.
+* Add e2e test for ALS solution of service mesh observability.
+* Support compiling(include testing) in JDK11.
+* Support build a single module.
 
 #### Java Agent
-* [**Core**] Fix the concurrency access bug in the Concurrency ClassLoader Case. 
-* [**Core**] Separate the config of the plugins from the core level.
-* [**Core**] Support instrumented class cached in memory or file, to be compatible with other agents, such as Arthas.
-* Add logic endpoint concept. Could analysis any span or tags flagged by the logic endpoint.
-* Add Spring annotation component name for UI visualization only.
-* Add support to trace `Call procedures` in MySQL plugin.
-* Support GraphQL plugin.
-* Support Quasar fiber plugin.
-* Support InfluxDB java client plugin.
-* Support brpc java plugin
-* Support `ConsoleAppender` in the logback v1 plugin.
-* Enhance vert.x endpoint names.
-* Optimize the code to prevent mongo statements from being too long.
-* Fix WebFlux plugin concurrency access bug.
-* Fix ShardingSphere plugins internal conflicts.
-* Fix duplicated Spring MVC endpoint.
-* Fix lettuce plugin sometimes trace doesn‘t show span layer. 
-* Fix `@Tag` returnedObject bug.
+* Support metrics plugin.
+* Support slf4j logs of gRPC and Kafka(when agent uses them) into the agent log files.
+* Add `PROPERTIES_REPORT_PERIOD_FACTOR` config to avoid the properties of instance cleared.
+* Limit the size of traced SQL to avoid OOM.
+* Support `mount` command to load a new set of plugins.
+* Add plugin selector mechanism.
+* Enhance the witness classes for MongoDB plugin.
+* Enhance the parameter truncate mechanism of SQL plugins.
+* Enhance the SpringMVC plugin in the reactive APIs.
+* Enhance the SpringMVC plugin to collect HTTP headers as the span tags.
+* Enhance the Kafka plugin, about `@KafkaPollAndInvoke`
+* Enhance the configuration initialization core. Plugin could have its own plugins.
+* Enhance Feign plugin to collect parameters.
+* Enhance Dubbo plugin to collect parameters.
+* Provide Thrift plugin.
+* Provide XXL-job plugin.
+* Provide MongoDB 4.x plugin.
+* Provide Kafka client 2.1+ plugin.
+* Provide WebFlux-WebClient plugin.
+* Provide ignore-exception plugin.
+* Provide quartz scheduler plugin.
+* Provide ElasticJob 2.x plugin.
+* Provide Spring @Scheduled plugin.
+* Provide Spring-Kafka plugin.
+* Provide HBase client plugin.
+* Provide JSON log format.
+* Move Spring WebFlux plugin to the optional plugin.
+* Fix inconsistent logic bug in PrefixMatch
+* Fix duplicate exit spans in Feign LoadBalancer mechanism.
+* Fix the target service blocked by the Kafka reporter.
+* Fix configurations of Kafka report don't work.
+* Fix rest template concurrent conflict.
+* Fix NPE in the ActiveMQ plugin.
+* Fix conflict between Kafka reporter and sampling plugin.
+* Fix NPE in the log formatter.
+* Fix span layer missing in certain cases, in the Kafka plugin.
+* Fix error format of time in serviceTraffic update.
+* Upgrade bytebuddy to 1.10.14
 
 #### OAP-Backend
-* Support Jetty Server advanced configurations.
-* Support label based filter in the prometheus fetcher and OpenCensus receiver.
-* Support using k8s configmap as the configuration center.
-* Support OAP health check, and storage module health check.
-* Support sampling rate in the dynamic configuration.
-* Add `endpoint_relation_sla` and `endpoint_relation_percentile` for endpoint relationship metrics.
-* Add components for Python plugins, including Kafka, Tornado, Redis, Django, PyMysql.
-* Add components for Golang SDK.
-* Add Nacos 1.3.1 back as an optional cluster coordinator and dynamic configuration center.
-* Enhance the metrics query for ElasticSearch implementation to increase the stability.
-* Reduce the length of storage entity names in the self-observability for MySQL and TiDB storage.
-* Fix labels are missing in Prometheus analysis context.
-* Fix column length issue in MySQL/TiDB storage.
-* Fix no data in 2nd level aggregation in self-observability. 
-* Fix searchService bug in ES implementation.
-* Fix wrong validation of endpoint relation entity query.
-* Fix the bug caused by the OAL debug flag.
-* Fix endpoint dependency bug in MQ and uninstrumented proxy cases.
-* Fix time bucket conversion issue in the InfluxDB storage implementation.
-* Update k8s client to 8.0.0
+* Support Nacos authentication.
+* Support labeled meter in the meter receiver.
+* Separate UI template into multiple files.
+* Provide support for Envoy tracing. Envoy tracer depends on the Envoy community.
+* Support query trace by tags.
+* Support composite alarm rules.
+* Support alarm messages to DingTalk.
+* Support alarm messages to WeChat.
+* Support alarm messages to Slack.
+* Support SSL for Prometheus fetcher and self telemetry.
+* Support labeled histogram in the prometheus format.
+* Support the status of segment based on entry span or first span only.
+* Support the error segment in the sampling mechanism.
+* Support SSL certs of gRPC server.
+* Support labeled metrics in the alarm rule setting.
+* Support to query all labeled data, if no explicit label in the query condition.
+* Add TLS parameters in the mesh analysis.
+* Add health check for InfluxDB storage.
+* Add `super dataset` concept for the traces/logs.
+* Add separate replicas configuration for super dataset.
+* Add `IN` operator in the OAL.
+* Add `!=` operator in the OAL.
+* Add `like` operator in the OAL.
+* Add `latest` function in the prometheus analysis.
+* Add more configurations in the gRPC server. 
+* Optimize the trace query performance.
+* Optimize the CPU usage rate calculation, at least to be 1.
+* Optimize the length of slow SQL column in the MySQL storage.
+* Optimize the topology query, use client side component name when no server side mapping.
+* Add component IDs for Python component.
+* Add component ID range for C++.
+* Fix Slack notification setting NPE.
+* Fix some module missing check of the module manager core.
+* Fix authentication doesn't work in sharing server.
+* Fix metrics batch persistent size bug.
+* Fix trace sampling bug.
+* Fix CLR receiver bug.
+* Fix end time bug in the query process.
+* Fix `Exporter INCREMENT mode` is not working.
+* Fix an error when executing startup.bat when the log directory exists
 
 #### UI
-* Support endpoint dependency graph.
-* Support x-scroll of trace/profile page
-* Fix database selector issue.
-* Add the bar chart in the UI templates.
+* Add browser dashboard.
+* Add browser log query page.
+* Support query trace by tags.
+* Fix JVM configuration.
+* Fix CLR configuration.
 
 #### Document
-* Update the user logo wall.
-* Add backend configuration vocabulary document.
-* Add agent installation doc for Tomcat9 on Windows.
-* Add istioctl ALS commands for the document.
-* Fix TTL documentation.
-* Add FAQ doc about thread instrumentation.
+* Add the document about `SW_NO_UPSTREAM_REAL_ADDRESS`.
+* Update ALS setup document.
+* Add Customization Config section for plugin development.
 
-#### CVE
-* Fix fuzzy query sql injection in the MySQL/TiDB storage. 
 
-All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/52?closed=1)
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/56?closed=1)
 
-8.0.1
 ------------------
-
-#### OAP-Backend
+Find change logs of all versions [here](changes).
\ No newline at end of file
-* Fix `no-init` mode is not working in ElasticSearch storage.
-
-
-8.0.0
-------------------
-
-#### Project
-* v3 protocol is added and implemented. All previous releases are incompatible with 8.x releases.
-* Service, Instance, Endpoint register mechanism and inventory storage entities are removed.
-* New GraphQL query protocol is provided, the legacy procotol is still supported(plan to remove at the end of this year).
-* Support Prometheus network protocol. Metrics in Prometheus format could be transferred into SkyWalking.
-* Python agent provided.
-* All inventory caches have been removed.
-* Apache ShardingSphere(4.1.0, 4.1.1) agent plugin provided.
-
-#### Java Agent
-* Add MariaDB plugin.
-* Vert.x plugin enhancement. More cases are covered.
-* Support v3 extension header.
-* Fix ElasticSearch 5.x plugin TransportClient error.
-* Support Correlation protocol v1.
-* Fix Finagle plugin bug, in processing Noop Span.
-* Make `CommandService` daemon to avoid blocking target application shutting down gracefully.
-* Refactor spring cloud gateway plugin and support tracing spring cloud gateway 2.2.x 
-
-#### OAP-Backend
-* Support meter system for Prometheus adoption. In future releases, we will add native meter APIs and MicroMeter(Sleuth) system.
-* Support endpoint grouping.
-* Add **SuperDataSet** annotation for storage entity. 
-* Add **superDatasetIndexShardsFactor** in the ElasticSearch storage, to provide more shards for @SuperDataSet annotated entites. Typically TraceSegment.
-* Support alarm settings for relationship of service, instance, and endpoint level metrics.
-* Support alarm settings for database(conjecture node in tracing scenario).
-* Data Model could be added in the runtime, don't depend on the bootstrap sequence anymore.
-* Reduce the memory cost, due to no inventory caches.
-* No buffer files in tracing and service mesh cases.
-* New ReadWriteSafe cache implementation. Simplify codes.
-* Provide default way for metrics query, even the metrics doesn't exist.
-* New GraphQL query protocol is provided. Support the metrics type query.
-* Set up length rule of service, instance, and endpoint.
-* Adjust the default jks for ElasticSearch to empty.
-* Fix Apdex function integer overflow issue. 
-* Fix profile storage issue.
-* Fix TTL issue.
-* Fix H2 column type bug.
-* Add JRE 8-14 test for the backend. 
-
-#### UI
-* UI dashboard is 100% configurable to adopt new metrics definited in the backend.
-
-#### Document
-* Add v8 upgrade document.
-* Make the coverage accurate including UT and e2e tests.
-* Add miss doc about collecting parameters in the profiled traces.
-
-#### CVE
-* Fix SQL Injection vulnerability in H2/MySQL implementation.
-* Upgrade Nacos to avoid the FastJson CVE in high frequency.
-* Upgrade jasckson-databind to 2.9.10. 
-
-
-All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/45?closed=1)
-
-7.0.0 release
-------------------
-You could find all CHANGES of 7.0.0 at [here](https://github.com/apache/skywalking/blob/v7.0.0/CHANGES.md)
-
-6.x releases
-------------------
-You could find all CHANGES of 6.x at [here](https://github.com/apache/skywalking/blob/6.x/CHANGES.md)
-
-5.x releases
-------------------
-You could find all CHANGES of 5.x at [here](https://github.com/apache/skywalking/blob/5.x/CHANGES.md)

changes/changes-5.x.md

+5.1.0
+------------------
+#### Agent Changes
+  - Fix spring inherit issue in another way
+  - Fix classloader dead lock in jdk7+ - 5.x
+  - Support Spring mvc 5.x
+  - Support Spring webflux 5.x
+  
+#### Collector Changes
+  - Fix too many open files.
+  - Fix the buffer file cannot delete.
+
+5.0.0-GA
+------------------
+
+#### Agent Changes
+  - Add several package names ignore in agent settings. Classes in these packages would be enhanced, even plugin declared.
+  - Support Undertow 2.x plugin.
+  - Fix wrong class names of Motan plugin, not a feature related issue, just naming.
+
+#### Collector Changes
+  - Make buffer file handler close more safety.
+  - Fix NPE in AlarmService
+
+#### Documents
+  - Fix compiling doc link.
+  - Update new live demo address.
+
+
+5.0.0-RC2
+------------------
+
+#### Agent Changes
+  - Support ActiveMQ 5.x
+  - Support RuntimeContext used out of TracingContext.
+  - Support Oracle ojdbc8 Plugin.
+  - Support ElasticSearch client transport 5.2-5.6 Plugin
+  - Support using agent.config with given path through system properties.
+  - Add a new way to transmit the Request and Response, to avoid bugs in Hytrix scenarios.
+  - Fix HTTPComponent client v4 operation name is empty.
+  - Fix 2 possible NPEs in Spring plugin.
+  - Fix a possible span leak in SpringMVC plugin.
+  - Fix NPE in Spring callback plugin.
+  
+#### Collector Changes
+  - Add GZip support for Zipkin receiver.
+  - Add new component IDs for nodejs.
+  - Fix Zipkin span receiver may miss data in request.
+  - Optimize codes in heatmap calculation. Reduce unnecessary divide.
+  - Fix NPE in Alarm content generation.
+  - Fix the precision lost in `ServiceNameService#startTimeMillis`.
+  - Fix GC count is 0.
+  - Fix topology breaks when RPC client uses the async thread call.
+  
+#### UI Changes
+  - Fix UI port can't be set by startup script in Windows.
+  - Fix Topology self link error.
+  - Fix stack color mismatch label color in gc time chart.
+  
+#### Documents
+  - Add users list.
+  - Fix several document typo.
+  - Sync the Chinese documents.
+  - Add OpenAPM badge.
+  - Add icon/font documents to NOTICE files.
+  
+[Issues and Pull requests](https://github.com/apache/incubator-skywalking/milestone/27?closed=1)
+
+
+5.0.0-beta2
+------------------
+
+#### UI -> Collector GraphQL query protocol
+  - Add order and status in trace query. 
+
+#### Agent Changes
+  - Add SOFA plugin.
+  - Add witness class for Kafka plugin.
+  - Add RuntimeContext in Context.
+  - Fix RuntimeContext fail in Tomcat plugin. 
+  - Fix incompatible for `getPropertyDescriptors` in Spring core. 
+  - Fix spymemcached plugin bug.
+  - Fix database URL parser bug.
+  - Fix `StringIndexOutOfBoundsException` when mysql jdbc url without databaseName。
+  - Fix duplicate slash in Spring MVC plugin bug.
+  - Fix namespace bug.
+  - Fix NPE in Okhttp plugin when connect failed.
+  - FIx `MalformedURLException` in httpClientComponent plugin. 
+  - Remove unused dependencies in Dubbo plugin.
+  - Remove gRPC timeout to avoid out of memory leak.
+  - Rewrite Async http client plugin.
+  - [Incubating] Add trace custom ignore optional plugin. 
+
+#### Collector Changes
+  - Topology query optimization for more than 100 apps.
+  - Error rate alarm is not triggered.
+  - Tolerate unsupported segments.
+  - Support Integer Array, Long Array, String Array, Double Array in streaming data model.
+  - Support multiple entry span and multiple service name in one segment durtaion record.
+  - Use BulkProcessor to control the linear writing of data by multiple threads.
+  - Determine the log is enabled for the DEBUG level before printing message.
+  - Add `static` modifier to Logger. 
+  - Add AspNet component.
+  - Filter inactive service in query.
+  - Support to query service based on Application.
+  - Fix `RemoteDataMappingIdNotFoundException`
+  - Exclude component-libaries.xml file in collector-*.jar, make sure it is in `/conf` only. 
+  - Separate a single TTL in minute to in minute, hour, day, month metric and trace.
+  - Add order and status in trace query. 
+  - Add folder lock to buffer folder.
+  - Modify operationName search from `match` to `match_phrase`.
+  - [Incubating] Add Zipkin span receiver. Support analysis Zipkin v1/v2 formats.
+  - [Incubating] Support sharding-sphere as storage implementor.
+  
+#### UI Changes
+  - Support login and access control.
+  - Add new webapp.yml configuration file.
+  - Modify webapp startup script.
+  - Link to trace query from Thermodynamic graph
+  - Add application selector in service view.
+  - Add order and status in trace query.
+  
+#### Documents
+  - Add architecture design doc.
+  - Reformat deploy document. 
+  - Adjust Tomcat deploy document.
+  - Remove all Apache licenses files in dist release packages.
+  - Update user cases.
+  - Update UI licenses.
+  - Add incubating sections in doc.
+
+[Issues and Pull requests](https://github.com/apache/incubator-skywalking/milestone/28?closed=1)
+  
+5.0.0-beta
+------------------
+ 
+#### UI -> Collector GraphQL query protocol
+  - Replace all tps to throughtput/cpm(calls per min)
+  - Add `getThermodynamic` service
+  - Update version to beta
+ 
+#### Agent Changes
+  - Support TLS.
+  - Support namespace.
+  - Support direct link.
+  - Support token.
+  - Add across thread toolkit.
+  - Add new plugin extend machenism to override agent core implementations.
+  - Fix an agent start up sequence bug.
+  - Fix wrong gc count.
+  - Remove system env override.
+  - Add Spring AOP aspect patch to avoid aop conflicts.
+ 
+#### Collector Changes
+  - Trace query based on timeline.
+  - Delete JVM aggregation in second.
+  - Support TLS.
+  - Support namespace.
+  - Support token auth.
+  - Group and aggregate requests based on reponse time and timeline, support Thermodynamic chart query
+  - Support component librariy setting through yml file for better extendibility.
+  - Optimize performance.
+  - Support short column name in ES or other storage implementor.
+  - Add a new cache module implementor, based on **Caffeine**.
+  - Support system property override settings.
+  - Refactor settings initialization.
+  - Provide collector instrumentation agent.
+  - Support .NET core component libraries.
+  - Fix `divide zero` in query.
+  - Fix `Data don't remove as expected` in ES implementor.
+  - Add some checks in collector modulization core.
+  - Add some test cases.
+ 
+#### UI Changes
+  - New trace query UI.
+  - New Application UI, merge server tab(removed) into applciation as sub page.
+  - New Topology UI.
+  - New response time / throughput TopN list.
+  - Add Thermodynamic chart in overview page.
+  - Change all tps to cpm(calls per minutes).
+  - Fix wrong osName in server view.
+  - Fix wrong startTime in trace view.
+  - Fix some icons internet requirements.
+ 
+#### Documents
+   - Add TLS document.
+   - Add namespace document.
+   - Add direct link document.
+   - Add token document.
+   - Add across thread toolkit document.
+   - Add a FAQ about, `Agent or collector version upgrade`.
+   - Sync all English document to Chinese.
+ 
+[Issues and Pull requests](https://github.com/apache/incubator-skywalking/milestone/24?closed=1)
+ 
+5.0.0-alpha
+------------------
+ 
+#### Agent -> Collector protocol
+ - Remove C++ keywords
+ - Move **Ref** into Span from Segment
+ - Add span type, when register an operation
+
+#### UI -> Collector GraphQL query protocol
+ - First version protocol
+ 
+#### Agent Changes
+ - Support gRPC 1.x plugin
+ - Support kafka 0.11 and 1.x plugin
+ - Support ServiceComb 0.x plugin
+ - Support optional plugin mechanism.
+ - Support Spring 3.x and 4.x bean annotation optional plugin
+ - Support Apache httpcomponent AsyncClient 4.x plugin 
+ - Provide automatic agent daily tests, and release reports [here](https://github.com/SkywalkingTest/agent-integration-test-report).
+ - Refactor Postgresql, Oracle, MySQL plugin for compatible.
+ - Fix jetty client 9 plugin error
+ - Fix async APIs of okhttp plugin error
+ - Fix log config didn't work
+ - Fix a class loader error in okhttp plugin
+ 
+#### Collector Changes
+ - Support metrics analysis and aggregation for application, application instance and service in minute, hour, day and month.
+ - Support new GraphQL query protocol
+ - Support alarm
+ - Provide a prototype instrument for collector.
+ - Support node speculate in cluster and application topology. (Provider Node -> Consumer Node) -> (Provider Node -> MQ Server -> Consumer Node)
+ 
+#### UI Changes
+ - New 5.0.0 UI!!!
+ 
+ [Issues and Pull requests](https://github.com/apache/incubator-skywalking/milestone/17?closed=1)
\ No newline at end of file

changes/changes-7.0.0.md

+7.0.0
+------------------
+
+#### Project
+* SkyWalking discards the supports of JDK 1.6 and 1.7 on the java agent side. The minimal requirement of JDK is JDK8.
+* Support method performance profile.
+* Provide new E2E test framework.
+* Remove AppVeyor from the CI, use GitHub action only.
+* Provide new plugin test tool.
+* Don't support SkyWalking v5 agent in-wire and out-wire protocol. v6 is required.
+
+#### Java Agent
+* Add lazy injection API in the agent core.
+* Support Servlet 2.5 in the Struts plugin.
+* Fix RestTemplate plugin ClassCastException in the Async call.
+* Add Finagle plugin.
+* Add test cases of H2 and struts.
+* Add Armeria 0.98 plugin.
+* Fix ElasticSearch plugin bug.
+* Fix EHCache plugin bug.
+* Fix a potential I/O leak.
+* Support Oracle SID mode.
+* Update Byte-buddy core.
+* Performance tuning: replace AtomicInteger with AtomicIntegerFieldUpdater.
+* Add AVRO plugin.
+* Update to JDK 1.8
+* Optimize the ignore plugin.
+* Enhance the gRPC plugin.
+* Add Kotlin Coroutine plugin.
+* Support HTTP parameter collection in Tomcat and SpringMVC plugin.
+* Add @Tag annotation in the application toolkit.
+* Move Lettuce into the default plugin list.
+* Move Webflux into the default plugin list.
+* Add HttpClient 3.x plugin.
+
+#### OAP-Backend
+* Support InfluxDB as a new storage option.
+* Add `selector` in the `application.yml`. Make the provider activation more flexible through System ENV.
+* Support sub-topology map query.
+* Support gRPC SSL.
+* Support HTTP protocol for agent.
+* Support Nginx LUA agent.
+* Support skip the instance relationship analysis if some agents doesn't have upstream address, currently for LUA agent.
+* Support metrics entity name in the storage. Optional, default OFF.
+* Merge the HOUR and DAY metrics into MINUTE in the ElasticSearch storage implementation. Reduce the payload for ElasticSearch server.
+* Support change detection mechanism in DCS.
+* Support Daily step in the ElasticSearch storage implementation for low traffic system.
+* Provide profile export tool.
+* Support alarm gRPC hook.
+* Fix PHP language doesn't show up on the instance page.
+* Add more comments in the source codes.
+* Add a new metrics type, multiple linears.
+* Fix thread concurrency issue in the alarm core.
+
+#### UI
+* Support custom topology definition.
+
+
+#### Document
+* Add FAQ about `python2` command required in the compiling.
+* Add doc about new e2e framework.
+* Add doc about the new profile feature.
+* Powered-by page updated.
+
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/37?closed=1)
\ No newline at end of file

changes/changes-8.0.0.md

+8.0.0
+------------------
+
+#### Project
+* v3 protocol is added and implemented. All previous releases are incompatible with 8.x releases.
+* Service, Instance, Endpoint register mechanism and inventory storage entities are removed.
+* New GraphQL query protocol is provided, the legacy procotol is still supported(plan to remove at the end of this year).
+* Support Prometheus network protocol. Metrics in Prometheus format could be transferred into SkyWalking.
+* Python agent provided.
+* All inventory caches have been removed.
+* Apache ShardingSphere(4.1.0, 4.1.1) agent plugin provided.
+
+#### Java Agent
+* Add MariaDB plugin.
+* Vert.x plugin enhancement. More cases are covered.
+* Support v3 extension header.
+* Fix ElasticSearch 5.x plugin TransportClient error.
+* Support Correlation protocol v1.
+* Fix Finagle plugin bug, in processing Noop Span.
+* Make `CommandService` daemon to avoid blocking target application shutting down gracefully.
+* Refactor spring cloud gateway plugin and support tracing spring cloud gateway 2.2.x 
+
+#### OAP-Backend
+* Support meter system for Prometheus adoption. In future releases, we will add native meter APIs and MicroMeter(Sleuth) system.
+* Support endpoint grouping.
+* Add **SuperDataSet** annotation for storage entity. 
+* Add **superDatasetIndexShardsFactor** in the ElasticSearch storage, to provide more shards for @SuperDataSet annotated entites. Typically TraceSegment.
+* Support alarm settings for relationship of service, instance, and endpoint level metrics.
+* Support alarm settings for database(conjecture node in tracing scenario).
+* Data Model could be added in the runtime, don't depend on the bootstrap sequence anymore.
+* Reduce the memory cost, due to no inventory caches.
+* No buffer files in tracing and service mesh cases.
+* New ReadWriteSafe cache implementation. Simplify codes.
+* Provide default way for metrics query, even the metrics doesn't exist.
+* New GraphQL query protocol is provided. Support the metrics type query.
+* Set up length rule of service, instance, and endpoint.
+* Adjust the default jks for ElasticSearch to empty.
+* Fix Apdex function integer overflow issue. 
+* Fix profile storage issue.
+* Fix TTL issue.
+* Fix H2 column type bug.
+* Add JRE 8-14 test for the backend. 
+
+#### UI
+* UI dashboard is 100% configurable to adopt new metrics definited in the backend.
+
+#### Document
+* Add v8 upgrade document.
+* Make the coverage accurate including UT and e2e tests.
+* Add miss doc about collecting parameters in the profiled traces.
+
+#### CVE
+* Fix SQL Injection vulnerability in H2/MySQL implementation.
+* Upgrade Nacos to avoid the FastJson CVE in high frequency.
+* Upgrade jasckson-databind to 2.9.10. 
+
+
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/45?closed=1)

changes/changes-8.0.1.md

+8.0.1
+------------------
+
+#### OAP-Backend
+* Fix `no-init` mode is not working in ElasticSearch storage.

changes/changes-8.1.0.md

+8.1.0
+------------------
+#### Project
+* Support Kafka as an optional trace, JVM metrics, profiling snapshots and meter system data transport layer.
+* Support Meter system, including the native metrics APIs and the Spring Sleuth adoption.
+* Support JVM thread metrics.  
+
+#### Java Agent
+* [**Core**] Fix the concurrency access bug in the Concurrency ClassLoader Case. 
+* [**Core**] Separate the config of the plugins from the core level.
+* [**Core**] Support instrumented class cached in memory or file, to be compatible with other agents, such as Arthas.
+* Add logic endpoint concept. Could analysis any span or tags flagged by the logic endpoint.
+* Add Spring annotation component name for UI visualization only.
+* Add support to trace `Call procedures` in MySQL plugin.
+* Support GraphQL plugin.
+* Support Quasar fiber plugin.
+* Support InfluxDB java client plugin.
+* Support brpc java plugin
+* Support `ConsoleAppender` in the logback v1 plugin.
+* Enhance vert.x endpoint names.
+* Optimize the code to prevent mongo statements from being too long.
+* Fix WebFlux plugin concurrency access bug.
+* Fix ShardingSphere plugins internal conflicts.
+* Fix duplicated Spring MVC endpoint.
+* Fix lettuce plugin sometimes trace doesn‘t show span layer. 
+* Fix `@Tag` returnedObject bug.
+
+#### OAP-Backend
+* Support Jetty Server advanced configurations.
+* Support label based filter in the prometheus fetcher and OpenCensus receiver.
+* Support using k8s configmap as the configuration center.
+* Support OAP health check, and storage module health check.
+* Support sampling rate in the dynamic configuration.
+* Add `endpoint_relation_sla` and `endpoint_relation_percentile` for endpoint relationship metrics.
+* Add components for Python plugins, including Kafka, Tornado, Redis, Django, PyMysql.
+* Add components for Golang SDK.
+* Add Nacos 1.3.1 back as an optional cluster coordinator and dynamic configuration center.
+* Enhance the metrics query for ElasticSearch implementation to increase the stability.
+* Reduce the length of storage entity names in the self-observability for MySQL and TiDB storage.
+* Fix labels are missing in Prometheus analysis context.
+* Fix column length issue in MySQL/TiDB storage.
+* Fix no data in 2nd level aggregation in self-observability. 
+* Fix searchService bug in ES implementation.
+* Fix wrong validation of endpoint relation entity query.
+* Fix the bug caused by the OAL debug flag.
+* Fix endpoint dependency bug in MQ and uninstrumented proxy cases.
+* Fix time bucket conversion issue in the InfluxDB storage implementation.
+* Update k8s client to 8.0.0
+
+#### UI
+* Support endpoint dependency graph.
+* Support x-scroll of trace/profile page
+* Fix database selector issue.
+* Add the bar chart in the UI templates.
+
+#### Document
+* Update the user logo wall.
+* Add backend configuration vocabulary document.
+* Add agent installation doc for Tomcat9 on Windows.
+* Add istioctl ALS commands for the document.
+* Fix TTL documentation.
+* Add FAQ doc about thread instrumentation.
+
+#### CVE
+* Fix fuzzy query sql injection in the MySQL/TiDB storage. 
+
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/52?closed=1)
+

changes/changes-8.2.0.md

+8.2.0
+------------------
+#### Project
+* Support Browser monitoring.
+* Add e2e test for ALS solution of service mesh observability.
+* Support compiling(include testing) in JDK11.
+* Support build a single module.
+
+#### Java Agent
+* Support metrics plugin.
+* Support slf4j logs of gRPC and Kafka(when agent uses them) into the agent log files.
+* Add `PROPERTIES_REPORT_PERIOD_FACTOR` config to avoid the properties of instance cleared.
+* Limit the size of traced SQL to avoid OOM.
+* Support `mount` command to load a new set of plugins.
+* Add plugin selector mechanism.
+* Enhance the witness classes for MongoDB plugin.
+* Enhance the parameter truncate mechanism of SQL plugins.
+* Enhance the SpringMVC plugin in the reactive APIs.
+* Enhance the SpringMVC plugin to collect HTTP headers as the span tags.
+* Enhance the Kafka plugin, about `@KafkaPollAndInvoke`
+* Enhance the configuration initialization core. Plugin could have its own plugins.
+* Enhance Feign plugin to collect parameters.
+* Enhance Dubbo plugin to collect parameters.
+* Provide Thrift plugin.
+* Provide XXL-job plugin.
+* Provide MongoDB 4.x plugin.
+* Provide Kafka client 2.1+ plugin.
+* Provide WebFlux-WebClient plugin.
+* Provide ignore-exception plugin.
+* Provide quartz scheduler plugin.
+* Provide ElasticJob 2.x plugin.
+* Provide Spring @Scheduled plugin.
+* Provide Spring-Kafka plugin.
+* Provide HBase client plugin.
+* Provide JSON log format.
+* Move Spring WebFlux plugin to the optional plugin.
+* Fix inconsistent logic bug in PrefixMatch
+* Fix duplicate exit spans in Feign LoadBalancer mechanism.
+* Fix the target service blocked by the Kafka reporter.
+* Fix configurations of Kafka report don't work.
+* Fix rest template concurrent conflict.
+* Fix NPE in the ActiveMQ plugin.
+* Fix conflict between Kafka reporter and sampling plugin.
+* Fix NPE in the log formatter.
+* Fix span layer missing in certain cases, in the Kafka plugin.
+* Fix error format of time in serviceTraffic update.
+* Upgrade bytebuddy to 1.10.14
+
+#### OAP-Backend
+* Support Nacos authentication.
+* Support labeled meter in the meter receiver.
+* Separate UI template into multiple files.
+* Provide support for Envoy tracing. Envoy tracer depends on the Envoy community.
+* Support query trace by tags.
+* Support composite alarm rules.
+* Support alarm messages to DingTalk.
+* Support alarm messages to WeChat.
+* Support alarm messages to Slack.
+* Support SSL for Prometheus fetcher and self telemetry.
+* Support labeled histogram in the prometheus format.
+* Support the status of segment based on entry span or first span only.
+* Support the error segment in the sampling mechanism.
+* Support SSL certs of gRPC server.
+* Support labeled metrics in the alarm rule setting.
+* Support to query all labeled data, if no explicit label in the query condition.
+* Add TLS parameters in the mesh analysis.
+* Add health check for InfluxDB storage.
+* Add `super dataset` concept for the traces/logs.
+* Add separate replicas configuration for super dataset.
+* Add `IN` operator in the OAL.
+* Add `!=` operator in the OAL.
+* Add `like` operator in the OAL.
+* Add `latest` function in the prometheus analysis.
+* Add more configurations in the gRPC server. 
+* Optimize the trace query performance.
+* Optimize the CPU usage rate calculation, at least to be 1.
+* Optimize the length of slow SQL column in the MySQL storage.
+* Optimize the topology query, use client side component name when no server side mapping.
+* Add component IDs for Python component.
+* Add component ID range for C++.
+* Fix Slack notification setting NPE.
+* Fix some module missing check of the module manager core.
+* Fix authentication doesn't work in sharing server.
+* Fix metrics batch persistent size bug.
+* Fix trace sampling bug.
+* Fix CLR receiver bug.
+* Fix end time bug in the query process.
+* Fix `Exporter INCREMENT mode` is not working.
+* Fix an error when executing startup.bat when the log directory exists
+
+#### UI
+* Add browser dashboard.
+* Add browser log query page.
+* Support query trace by tags.
+* Fix JVM configuration.
+* Fix CLR configuration.
+
+#### Document
+* Add the document about `SW_NO_UPSTREAM_REAL_ADDRESS`.
+* Update ALS setup document.
+* Add Customization Config section for plugin development.
+
+
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/56?closed=1)