Struct mz_storage::upsert::types::MergeStats

source · 
pub struct MergeStats {
    pub written_merge_operands: u64,
    pub size_written: u64,
    pub size_diff: i64,
}
Expand description

Statistics for a single call to multi_merge.

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§written_merge_operands: u64

The number of updates written as merge operands to the backend, for the backend to process async in the consolidating_merge_function. Should be equal to number of inserts + deletes

§size_written: u64

The total size of values provided to multi_merge. The backend will write these down and then later merge them in the consolidating_merge_function.

§size_diff: i64

The estimated diff of the total size of the working set after the merge operands are merged by the backend. This is an estimate since it can’t account for the size overhead of StateValue for values that consolidate to 0 (tombstoned-values).

Trait Implementations§

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impl Clone for MergeStats

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fn clone(&self) -> MergeStats

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for MergeStats

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

Formats the value using the given formatter. Read more
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impl Default for MergeStats

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fn default() -> MergeStats

Returns the “default value” for a type. Read more

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