xiejiajun opened a new pull request #4264: URL: https://github.com/apache/zeppelin/pull/4264
### What is this PR for? - The org.eclipse.jetty.websocket.common.WebSocketRemoteEndpoint#blockingWrite method has been to ensure that the websocket sends messages serially by `ReentrantLock` and `WriteBlocket`, so the NotebookSocket.send method does not need to be locked. - If we lock the NotebookSocket.send method, the NotebookServer#onClose method will be triggered when the NotebookSocket.send method sends a message abnormally. At this time, if there are other threads that need to send messages through the current Websocket Session to preempt the noteSocketMap lock in the ConnectionManager, It will trigger a deadlock. ### What type of PR is it? [Bug Fix] ### Todos * [ ] - Task ### What is the Jira issue? * [ZEPPELIN-5572](https://issues.apache.org/jira/browse/ZEPPELIN-5572) ### How should this be tested? * CI ### Questions: * Does the licenses files need update? No * Is there breaking changes for older versions? No * Does this needs documentation? No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@zeppelin.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
