[GitHub] lindzh opened a new pull request #222: [ROCKETMQ-355] Client asyncSend is not fully async

[GitBox <gi...@apache.org>]

lindzh opened a new pull request #222: [ROCKETMQ-355] Client asyncSend is not fully async
URL: https://github.com/apache/rocketmq/pull/222
 
 
   ## What is the purpose of the change
   
   Client asyncSend is not fully async because of param validation, connection status check and get route info may cause exception,and these exceptions is called in user thread may cause biz stop.
   
   ## Brief changelog
   
   Make client asyncSend fully async.
   
   ## Verifying this change
   
   This is a trivial change.
   
   Follow this checklist to help us incorporate your contribution quickly and easily:
   
   - [x] Make sure there is a [JIRA issue](https://issues.apache.org/jira/projects/ROCKETMQ/issues/) filed for the change (usually before you start working on it). Trivial changes like typos do not require a JIRA issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue. 
   - [x] Format the pull request title like `[ROCKETMQ-XXX] Fix UnknownException when host config not exist`. Each commit in the pull request should have a meaningful subject line and body.
   - [x] Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
   - [x] Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in [test module](https://github.com/apache/rocketmq/tree/master/test).
   - [x] Run `mvn -B clean apache-rat:check findbugs:findbugs checkstyle:checkstyle` to make sure basic checks pass. Run `mvn clean install -DskipITs` to make sure unit-test pass. Run `mvn clean test-compile failsafe:integration-test`  to make sure integration-test pass.
   - [x] If this contribution is large, please file an [Apache Individual Contributor License Agreement](http://www.apache.org/licenses/#clas).
   

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