Struct TimestampStatistics 

pub struct TimestampStatistics {
    pub min_timestamp: i64,
    pub max_timestamp: Option<i64>,
    pub min_deletion_time: i64,
    pub max_deletion_time: i64,
    pub min_ttl: Option<i64>,
    pub max_ttl: Option<i64>,
    pub rows_with_ttl: Option<u64>,
}

Timestamp range and TTL statistics

Fields

min_timestamp: i64

Minimum timestamp in the SSTable (microseconds since epoch)

max_timestamp: Option<i64>

Maximum timestamp in the SSTable (microseconds since epoch), or None when it is NOT authoritatively available from Statistics.db (issue #1653). The enhanced (nb) parser leaves this None until the best-effort STATS post-pass recovers the real maxTimestamp (#1729); a None here is an honest “unavailable”, NOT a fabricated placeholder (it previously aliased min_timestamp/i64::MIN, both of which lied about the max). A consumer that needs a real maximum MUST treat None as unavailable and fail closed (see write_engine::merge::fully_expired).

min_deletion_time: i64

Minimum deletion time (for tombstones)

max_deletion_time: i64

Maximum deletion time (for tombstones). Genuinely decoded from STATS by the best-effort post-pass (#1073/#1011); before it runs the enhanced parser uses the authoritative NO_DELETION_TIME (i64::MAX) “no deletions recorded” value, so a post-pass failure fails CLOSED (never classified fully-expired) rather than the old = min_deletion_time lie (issue #1653).

min_ttl: Option<i64>

Minimum TTL value

max_ttl: Option<i64>

Maximum TTL value, or None when not authoritatively available (issue #1653 — the enhanced parser previously aliased this to min_ttl, a lie).

rows_with_ttl: Option<u64>

Number of rows with TTL, or None when not authoritatively available from Statistics.db (issue #1653). The enhanced (nb) parser does not decode a per-SSTable rows-with-TTL count, so it is honestly None rather than a fabricated 0 (which claimed “no rows have a TTL”).

Trait Implementations

impl Clone for TimestampStatistics

fn clone(&self) -> TimestampStatistics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TimestampStatistics

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TimestampStatistics

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TimestampStatistics

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.