yukon created ROCKETMQ-323:
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Summary: Release semaphore after callback being finished for async
invoke
Key: ROCKETMQ-323
URL: https://issues.apache.org/jira/browse/ROCKETMQ-323
Project: Apache RocketMQ
Issue Type: Improvement
Components: rocketmq-client
Affects Versions: 4.1.0-incubating, 4.0.0-incubating
Reporter: yukon
Assignee: yukon
Fix For: 4.2.0
Currently, the async semaphore will be released before invoking the callback,
if the callback is a heavy task which is not recommended, lots of async
requests will be queued in `publicExecutor` thread pool, may cause OOM or FGC.
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