Marcel Reutegger created OAK-8623:
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Summary: Improve collision handling performance
Key: OAK-8623
URL: https://issues.apache.org/jira/browse/OAK-8623
Project: Jackrabbit Oak
Issue Type: Improvement
Components: documentmk
Reporter: Marcel Reutegger
Assignee: Marcel Reutegger
The current collision handling on conflict in the DocumentNodeStore can be
rather expensive when there are old branch commits which were not merged.
A commit that includes documents with old branch commits that have not been
merged will always attempt to set a collision marker on the commit root
document for those changes.
While it is difficult to tell whether a branch commit will be merged at some
point, at least those branch commits that were created before the most recent
startup of a cluster node cannot be merged. The collision handling logic could
be improved to take the start time of a cluster node into account.
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