Struct TableCounts 

pub struct TableCounts {
    pub partition_count: u64,
    pub total_rows: Option<u64>,
}

Authoritative per-SSTable row/partition counts decoded from the STATS component of Statistics.db (issue #944).

Both fields come straight from cassandra-5.0.0 StatsMetadata.StatsMetadataSerializer.serialize — no heuristics (#28):

• partition_count is the sum of the bucket counts of the estimatedPartitionSize EstimatedHistogram (the FIRST STATS field). That histogram records one observation per partition, so Σ counts is exactly the SSTable’s partition count — the same value SSTableReader exposes via getEstimatedPartitionSize().count(). It is reachable by a fully self-describing walk and needs NO version gates.
• total_rows is the totalRows long written near the end of the STATS body (field 12). Reaching it requires the version-gated forward walk (improvedMinMax/legacyMinMax block + commit-log intervals), so it is Some only when authoritative VersionGates are supplied AND the walk could traverse the min/max block. For a clustered table whose covered-Slice bound values are not modeled, total_rows is honestly None rather than a guessed value.

Fields

partition_count: u64

Σ estimatedPartitionSize histogram bucket counts = partition count.

total_rows: Option<u64>

totalRows from the STATS body, when the gated walk could reach it.

Trait Implementations

impl Clone for TableCounts

fn clone(&self) -> TableCounts

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TableCounts

impl Debug for TableCounts

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

Formats the value using the given formatter.

impl Eq for TableCounts

impl PartialEq for TableCounts

fn eq(&self, other: &TableCounts) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TableCounts