Alex Parvulescu created OAK-3893:
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Summary: SegmentWriter records cache could use thinner keys
Key: OAK-3893
URL: https://issues.apache.org/jira/browse/OAK-3893
Project: Jackrabbit Oak
Issue Type: Improvement
Components: segmentmk
Reporter: Alex Parvulescu
Assignee: Alex Parvulescu
Priority: Minor
The SegmentWriter keeps a records deduplication cache ('records' map) that
maintains 2 types of mappings:
* template -> recordid
* strings -> recordid
For the first one (template-> recordid) we can come up with a thinner
representation of a template (a hash function that is fast and not very
collision prone) so we don't have to keep a reference to each template object.
Same applies for second one, similar to what is happening in the StringsCache
now, we could keep the string value up to a certain size and beyond that, hash
it and use that for the deduplication map.
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