[GitHub] [zeppelin] zjffdu opened a new pull request #3985: [ZEPPELIN-5147]. ConcurrentModificationException in Note#toJson

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

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
   


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[GitHub] [zeppelin] asfgit closed pull request #3985: [ZEPPELIN-5147]. ConcurrentModificationException in Note#toJson

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

asfgit closed pull request #3985:
URL: https://github.com/apache/zeppelin/pull/3985


   


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