Ivan Bessonov created IGNITE-22107:
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Summary: Properly encapsulate partition meta
Key: IGNITE-22107
URL: https://issues.apache.org/jira/browse/IGNITE-22107
Project: Ignite
Issue Type: Improvement
Reporter: Ivan Bessonov
Fix For: 3.0.0-beta2
`PartitionMeta` and `PartitionMetaIo` leak specific implementation details,
specifically - all fields except for `pageCount`. This breaks encapsulation and
makes `page-memory` module code non-reusable.
I propose splitting meta into 2 parts - abstract meta, that would only hold
page count, and specific meta that will be located in a different module, close
to the implementation.
In this case, we would have to pass meta IO as parameters into methods like
`PartitionMetaManager#readOrCreateMeta`, and create a getter for IO in
`AbstractPartitionMeta` class itself, but that's a necessary sacrifice.
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