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https://issues.apache.org/jira/browse/JAMES-3477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17248923#comment-17248923
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ASF GitHub Bot commented on JAMES-3477:
---------------------------------------
chibenwa commented on pull request #280:
URL: https://github.com/apache/james-project/pull/280#issuecomment-744378892
Add a quick 'toy' micro-benchmark for evaluating mailetcon…
32d1fca
…tainer efficiency
On top of master: 16.691 ms
On top of the proposed changes: 17.126 ms
With "always copy" behavior: 15.442 ms
Implementation of "always copy" behavior:
```
private MimeMessageCopyOnWriteProxy(MimeMessage original, boolean
originalIsAReference) {
super(Session.getDefaultInstance(System.getProperties(), null));
try {
refCount = new MessageReferenceTracker(new
MimeMessageWrapper(original));
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
```
Performance gains of copy-on-write proxy are not obvious...
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> MimeMessageCopyOnWriteProxy is not thread safe
> ----------------------------------------------
>
> Key: JAMES-3477
> URL: https://issues.apache.org/jira/browse/JAMES-3477
> Project: James Server
> Issue Type: Wish
> Reporter: Benoit Tellier
> Priority: Major
>
> https://www.mail-archive.com/[email protected]/msg69221.html
> &
> https://github.com/jeantil/james-project/commit/c0354ea21c5b0a8f6d46e9919f7db0d97db9eb23
> proves there is a concurrency issue in MimeMessageCopyOnWriteProxy class that
> we need to investigate.
> It causes our test suite to be flacky.
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