* Remove the local span and exit span register mechanism in Java agent scenario.
* Fix config, plugin, and document, as exit span is not required register anymore.
* Try to fix the test case expected data due to no register for exit span.
* Fix toolkit case.
* Remove exit span from plugin test framework document.
* Update protocol, FAQ, and CHANGELOG documents to highlight this change.
* Fix NPE when no entry span in the whole segment. Set endpoint to null in segment entity.
* Fix the snapshot and add inexistence operation name id.
* Fix several async cases.
* Fix undertow test case.
* Fix wrong error log name.
* Keep name consistent with 6.x concepts.
* Try to fix 3 async scenarios.
* Fix okhttp case.
* Fix Spring Async case.
* Fix another NPE
* Fix NPE when first span has no endpoint id when it is local or exit span.
* Still fill first operation name when no endpoint id.
* Add apdex function to OAL
* Add empty line
* Setup config watcher
* Add identifier type to function parameter
* Add config test
* Update score algorithm
* Replace responseCode with status
* Add comments about apdex score algorithm
* Add docs
* Add e2e test case
* Update test case
* Fix disptch class generating error
* Update value name of apdex metric
* Tuning threshold
* Fix single tolerated point bug
* [Feature] Officially support ElasticSearch 7 as backend storage
* Extract bootstrap module to be shared by multiple starters
* Add missing configuration file and distinguish different version in test
* Update known-oap-backend-dependencies-es7.txt
Update the dependency lib
* Fix missing adaptation to ElasticSearch 7
* Rename ElasticSearch 7 specific class with Es7 infix
* Fix miss-adapted ElasticSearch DAO API
* Add ES7 specific configuration and polish documentations
* Polish documentations
* Polish documentations
* Update EtcdCoordinator.java
when EtcdCoordinator cannot connect to etcd cluster for a long time,
the information registered in etcd will expire and refresh() function will not work.
* Add register persistent worker latency metrics #3671
* remove never thrown exception on Time#close()
add panel to mesh-mode-grafana.json
* remove never thrown exception on Time#close()
add panel to mesh-mode-grafana.json
* add plugin netty-socketio https://github.com/mrniko/netty-socketio
* delete create exit span interceptor.
* delete create exit span interceptor testcase.
* delete create exit span interceptor testcase.
* add constructor test unit
* change bind on random port in test case
* reverse upstream master whitespace
* resolve build_id param
* delete health check segment test case
* add ContextManager.isActive check before use activeSpan invoke
* remove unnecessary code and blank line
* Fix#3402
* Fix unecessary blankline
* Optimize rebuild logic
* Fix checkstyle fail
* Add concurrency test
* Fix text mistakes
* Optimize refresh logic && new test for return clients never change by refresh logic
* Make unit test more clearness
* Add more unit test && fix a bug
* Rename variable && format by skywalking style
* Is it a typo or not?
* delete datasource-settings.properties
* handle 'metadataQueryMaxSize'
* delete DynamicModuleConfig.java
* modify mysql config
* parsing yaml to support the configuration for multiple properties
* delete datasource-settings.properties
* modify doc
* add properties for docker-entrypoint.sh
* add testLoadConfig()
吴晟 Wu Sheng
Gao Hongtao
zhang-wei
Daming
Juan Pan(Trista)
kezhenxu94
Jared Tan
mrproliu
Stalary
于玉桔
surechen
aderm
YuXiaoFeng
qiyang
coki230
Kdump
Yanick.xia
echooymxq