zjffdu opened a new pull request #3985: URL: https://github.com/apache/zeppelin/pull/3985
### What is this PR for? The root cause is that when calling Note#toJson, note may be in change (adding/removing paragraph). In this PR, I change Note#paragraphs to CopyOnWriteArrayList, because adding/removing operation for paragraph is not a frequent operation, so it is ok for use CopyOnWriteArrayList here. Besides that, this PR also do some improvement on other parts, such as adding more logging. ### What type of PR is it? [Bug Fix | Improvement ] ### Todos * [ ] - Task ### What is the Jira issue? * https://issues.apache.org/jira/browse/ZEPPELIN-5147 ### How should this be tested? * CI pass ### Screenshots (if appropriate) ### 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. For queries about this service, please contact Infrastructure at: [email protected]
