Ivan Bessonov created IGNITE-16912:
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Summary: Revisit UUID generation for RowId
Key: IGNITE-16912
URL: https://issues.apache.org/jira/browse/IGNITE-16912
Project: Ignite
Issue Type: Improvement
Reporter: Ivan Bessonov
Current implementation uses UUID.randomUUID, which comes with a set of problems:
* some people say that you can't avoid collisions this way. Technically it's
true, although I don't think that it's a real problem
* secure random is slow when you use it frequently. This can affect insertion
performance
* random uuids are randomly distributed, this can be a problem for RocksDB,
for example - if most insertions will go to the tail, this can improve overall
write performance
There are interesting approaches in this particular document, we should take a
look at it:
https://datatracker.ietf.org/doc/draft-peabody-dispatch-new-uuid-format/
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