Reamer opened a new pull request, #4382:
URL: https://github.com/apache/zeppelin/pull/4382
### What is this PR for?
This pull request introduces a mechanism to initialize Notes in the
background.
A consumer is passed, which is then called with the NoteId.
The consumer itself is responsible for checking, for example, whether the
note still exists.
The initialization runs in several threads. The consumer must therefore be
thread-safe.
This approach scales well, in my opinion, because it makes effective use of
NoteCache. Another approach, e.g. to initialize the Notes in the sub-module,
would not utilize the NoteCache as effectively. This is true if one sub-module
is faster than the other.
### What type of PR is it?
- Improvement
### What is the Jira issue?
* https://issues.apache.org/jira/browse/ZEPPELIN-5754
### How should this be tested?
* CI
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need to update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
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