Pavel Pereslegin created IGNITE-22638:
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Summary: Catalog compaction. Provide listener API on
MvPartitionStorage with semantic onBeforeCheckpoint.
Key: IGNITE-22638
URL: https://issues.apache.org/jira/browse/IGNITE-22638
Project: Ignite
Issue Type: Task
Reporter: Pavel Pereslegin
To perform catalog compaction, we need to determine and save a minimum time
(low watermark) that guarantees that when next time we'll apply the raft log,
we don't need the history up to that timestamp.
To implement local calculation of the minimum timestamp, we need to provide an
API with semantics similar to CheckpointListener#beforeCheckpointBegin (or
afterCheckpointEnd, *to be clarified*) to save this timestamp.
This timestamp make sence only for groups (*clarify*) with persistence, but it
would be nice to have a common API (for example in MvPartitionStorage), and so
the implementation requires collaboration with the storage engine team).
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