Struct mz_persist_client::stats::SnapshotStats

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pub struct SnapshotStats {
    pub shard_id: ShardId,
    pub num_updates: usize,
}
Expand description

Statistics about the contents of a shard as_of some time.

TODO: Add more stats here as they become necessary.

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§shard_id: ShardId

The shard these statistics are for.

§num_updates: usize

An estimate of the count of updates in the shard.

This is an upper bound on the number of updates that persist_source would emit if you snapshot the source at the given as_of. The real number of updates, after consolidation, might be lower. It includes both additions and retractions.

NB: Because of internal persist compaction, the answer for a given as_of may change over time (as persist advances through Seqnos), but because compaction never results in more updates than the sum of the inputs, it can only go down.

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impl Debug for SnapshotStats

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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