store_api::region_engine

Struct RegionStatistic

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pub struct RegionStatistic {
    pub num_rows: u64,
    pub memtable_size: u64,
    pub wal_size: u64,
    pub manifest_size: u64,
    pub sst_size: u64,
    pub sst_num: u64,
    pub index_size: u64,
    pub manifest: RegionManifestInfo,
    pub write_bytes: u64,
    pub data_topic_latest_entry_id: u64,
    pub metadata_topic_latest_entry_id: u64,
}
Expand description

Represents the statistics of a region.

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§num_rows: u64

The number of rows

§memtable_size: u64

The size of memtable in bytes.

§wal_size: u64

The size of WAL in bytes.

§manifest_size: u64

The size of manifest in bytes.

§sst_size: u64

The size of SST data files in bytes.

§sst_num: u64

The num of SST files.

§index_size: u64

The size of SST index files in bytes.

§manifest: RegionManifestInfo

The details of the region.

§write_bytes: u64

The write throughput of the region.

§data_topic_latest_entry_id: u64

The latest entry id of the region’s remote WAL since last flush. For metric engine, there’re two latest entry ids, one for data and one for metadata. TODO(weny): remove this two fields and use single instead.

§metadata_topic_latest_entry_id: u64

Implementations§

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impl RegionStatistic

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pub fn deserialize_from_slice(value: &[u8]) -> Option<RegionStatistic>

Deserializes the region statistic to a byte array.

Returns None if the deserialization fails.

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pub fn serialize_to_vec(&self) -> Option<Vec<u8>>

Serializes the region statistic to a byte array.

Returns None if the serialization fails.

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impl RegionStatistic

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pub fn estimated_disk_size(&self) -> u64

Returns the estimated disk size of the region.

Trait Implementations§

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impl Debug for RegionStatistic

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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 RegionStatistic

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fn default() -> RegionStatistic

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for RegionStatistic

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for RegionStatistic

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

Serialize this value into the given Serde serializer. Read more

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