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skywalking-java/changes/changes-5.x.md

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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
#### Documentation
- 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.
#### Documentation
- 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.
#### Documentation
- 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 throughput/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 response 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 application 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.
#### Documentation
- 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)
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