[skywalking-java] branch 8.10.0-release updated: Create changes-8.10.0.md

[wu...@apache.org]

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wusheng pushed a commit to branch 8.10.0-release
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The following commit(s) were added to refs/heads/8.10.0-release by this push:
     new ed06a8afb Create changes-8.10.0.md
ed06a8afb is described below

commit ed06a8afb3525b97fe3791cd21ade6a4c84adcb1
Author: 吴晟 Wu Sheng <wu...@foxmail.com>
AuthorDate: Tue Apr 12 23:34:09 2022 +0800

    Create changes-8.10.0.md
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 1 file changed, 48 insertions(+)

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+Changes by Version
+==================
+Release Notes.
+
+8.10.0
+------------------
+
+* [Important] Namespace represents a subnet, such as kubernetes namespace, or 172.10.*.*. Make namespace concept as a
+  part of service naming format.
+* [Important] Add cluster concept, also as a part of service naming format. The cluster name would be
+    1. Add as {@link #SERVICE_NAME} suffix.
+    2. Add as exit span's peer, ${CLUSTER} / original peer
+    3. Cross Process Propagation Header's value addressUsedAtClient[index=8] (Target address of this request used on the
+       client end).
+* Support Undertow thread pool metrics collecting.
+* Support Tomcat thread pool metric collect.
+* Remove plugin for ServiceComb Java Chassis 0.x
+* Add Guava EventBus plugin.
+* Fix Dubbo 3.x plugin's tracing problem.
+* Fix the bug that maybe generate multiple trace when invoke http request by spring webflux webclient.
+* Support Druid Connection pool metrics collecting.
+* Support HikariCP Connection pool metrics collecting.
+* Support Dbcp2 Connection pool metrics collecting.
+* Ignore the synthetic constructor created by the agent in the Spring patch plugin.
+* Add witness class for vertx-core-3.x plugin.
+* Add witness class for graphql plugin.
+* Add vertx-core-4.x plugin.
+* Renamed graphql-12.x-plugin to graphql-12.x-15.x-plugin and graphql-12.x-scenario to graphql-12.x-15.x-scenario.
+* Add graphql-16plus plugin.
+* [Test] Support to configure plugin test base images.
+* [Breaking Change] Remove deprecated `agent.instance_properties` configuration.
+  Recommend `agent.instance_properties_json`.
+* The namespace and cluster would be reported as instance properties, keys are `namespace` and `cluster`. Notice, if
+  instance_properties_json includes these two keys, they would be overrided by the agent core.
+* [Breaking Change] Remove the namespace from `cross process propagation` key.
+* Make sure the parent endpoint in tracing context from existing first ENTRY span, rather than first span only.
+* Fix the bug that maybe causing memory leak and repeated traceId when use gateway-2.1.x-plugin or gateway-3.x-plugin.
+* Fix Grpc 1.x plugin could leak context due to gRPC cancelled.
+* Add JDK ThreadPoolExecutor Plugin.
+* Support default database(not set through JDBC URL) in mysql-5.x plugin.
+
+#### Documentation
+
+* Add link about java agent injector.
+* Update configurations doc, remove `agent.instance_properties[key]=value`.
+* Update configurations doc, add `agent.cluster` and update `agent.namespace`.
+
+All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/120?closed=1)