Michael Dürig created OAK-4732:
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Summary: (Slightly) prioritise reads over writes
Key: OAK-4732
URL: https://issues.apache.org/jira/browse/OAK-4732
Project: Jackrabbit Oak
Issue Type: Improvement
Components: segment-tar
Reporter: Michael Dürig
Assignee: Michael Dürig
Fix For: Segment Tar 0.0.12
When fetching the current root from the {{SegmentNodeStore}} an older revision
will be returned when a commit is being processed concurrently. I think it
would make sense to wait for a short time in this case increasing the chance of
returning an up to date state. The idea is that this would lower the rebasing
work that need to be done later on should the returned root be used for further
modifications.
An interesting value for the wait time is to use the median (or more general a
percentile) of the commit time of the last say 1000 commits. This would mean
that (for the median) we have a 50% chance of getting up to date date. For a
90% percentile we would have longer wait times but then a 90% chance of getting
up to date date.
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