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feat: add written_bytes_since_open column to region_statistics table (#6904)

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* feat: add `write_bytes` column to `region_statistics` table

Signed-off-by: WenyXu <wenymedia@gmail.com>

* chore: update comments

Signed-off-by: WenyXu <wenymedia@gmail.com>

* chore: rename `write_bytes` to `written_bytes`

Signed-off-by: WenyXu <wenymedia@gmail.com>

* chore: rename `written_bytes` to `written_bytes_since_open`

Signed-off-by: WenyXu <wenymedia@gmail.com>

* chore: apply suggestions

Signed-off-by: WenyXu <wenymedia@gmail.com>

---------

Signed-off-by: WenyXu <wenymedia@gmail.com>
This commit is contained in:
Weny Xu
2025-09-05 15:27:30 +08:00
committed by GitHub
parent 24e5c9f6da
commit 658d07bfc8
18 changed files with 70 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/catalog/src/system_schema/information_schema/region_statistics.rs
View File

@@ -40,6 +40,7 @@ const REGION_ID: &str = "region_id";
const TABLE_ID: &str = "table_id";
const REGION_NUMBER: &str = "region_number";
const REGION_ROWS: &str = "region_rows";
const WRITTEN_BYTES: &str = "written_bytes_since_open";
const DISK_SIZE: &str = "disk_size";
const MEMTABLE_SIZE: &str = "memtable_size";
const MANIFEST_SIZE: &str = "manifest_size";
@@ -57,6 +58,7 @@ const INIT_CAPACITY: usize = 42;
/// - `table_id`: The table id.
/// - `region_number`: The region number.
/// - `region_rows`: The number of rows in region.
/// - `written_bytes_since_open`: The total bytes written of the region since region opened.
/// - `memtable_size`: The memtable size in bytes.
/// - `disk_size`: The approximate disk size in bytes.
/// - `manifest_size`: The manifest size in bytes.
@@ -84,6 +86,7 @@ impl InformationSchemaRegionStatistics {
ColumnSchema::new(TABLE_ID, ConcreteDataType::uint32_datatype(), false),
ColumnSchema::new(REGION_NUMBER, ConcreteDataType::uint32_datatype(), false),
ColumnSchema::new(REGION_ROWS, ConcreteDataType::uint64_datatype(), true),
ColumnSchema::new(WRITTEN_BYTES, ConcreteDataType::uint64_datatype(), true),
ColumnSchema::new(DISK_SIZE, ConcreteDataType::uint64_datatype(), true),
ColumnSchema::new(MEMTABLE_SIZE, ConcreteDataType::uint64_datatype(), true),
ColumnSchema::new(MANIFEST_SIZE, ConcreteDataType::uint64_datatype(), true),
@@ -147,6 +150,7 @@ struct InformationSchemaRegionStatisticsBuilder {
table_ids: UInt32VectorBuilder,
region_numbers: UInt32VectorBuilder,
region_rows: UInt64VectorBuilder,
written_bytes: UInt64VectorBuilder,
disk_sizes: UInt64VectorBuilder,
memtable_sizes: UInt64VectorBuilder,
manifest_sizes: UInt64VectorBuilder,
@@ -166,6 +170,7 @@ impl InformationSchemaRegionStatisticsBuilder {
table_ids: UInt32VectorBuilder::with_capacity(INIT_CAPACITY),
region_numbers: UInt32VectorBuilder::with_capacity(INIT_CAPACITY),
region_rows: UInt64VectorBuilder::with_capacity(INIT_CAPACITY),
written_bytes: UInt64VectorBuilder::with_capacity(INIT_CAPACITY),
disk_sizes: UInt64VectorBuilder::with_capacity(INIT_CAPACITY),
memtable_sizes: UInt64VectorBuilder::with_capacity(INIT_CAPACITY),
manifest_sizes: UInt64VectorBuilder::with_capacity(INIT_CAPACITY),
@@ -197,6 +202,7 @@ impl InformationSchemaRegionStatisticsBuilder {
(TABLE_ID, &Value::from(region_stat.id.table_id())),
(REGION_NUMBER, &Value::from(region_stat.id.region_number())),
(REGION_ROWS, &Value::from(region_stat.num_rows)),
(WRITTEN_BYTES, &Value::from(region_stat.written_bytes)),
(DISK_SIZE, &Value::from(region_stat.approximate_bytes)),
(MEMTABLE_SIZE, &Value::from(region_stat.memtable_size)),
(MANIFEST_SIZE, &Value::from(region_stat.manifest_size)),
@@ -216,6 +222,7 @@ impl InformationSchemaRegionStatisticsBuilder {
self.region_numbers
.push(Some(region_stat.id.region_number()));
self.region_rows.push(Some(region_stat.num_rows));
self.written_bytes.push(Some(region_stat.written_bytes));
self.disk_sizes.push(Some(region_stat.approximate_bytes));
self.memtable_sizes.push(Some(region_stat.memtable_size));
self.manifest_sizes.push(Some(region_stat.manifest_size));
@@ -232,6 +239,7 @@ impl InformationSchemaRegionStatisticsBuilder {
Arc::new(self.table_ids.finish()),
Arc::new(self.region_numbers.finish()),
Arc::new(self.region_rows.finish()),
Arc::new(self.written_bytes.finish()),
Arc::new(self.disk_sizes.finish()),
Arc::new(self.memtable_sizes.finish()),
Arc::new(self.manifest_sizes.finish()),

2
src/cmd/src/standalone.rs
View File

@@ -834,7 +834,7 @@ impl InformationExtension for StandaloneInformationExtension {
region_manifest: region_stat.manifest.into(),
data_topic_latest_entry_id: region_stat.data_topic_latest_entry_id,
metadata_topic_latest_entry_id: region_stat.metadata_topic_latest_entry_id,
write_bytes: 0,
written_bytes: region_stat.written_bytes,
}
})
.collect::<Vec<_>>();

6
src/common/meta/src/datanode.rs
View File

@@ -102,8 +102,8 @@ pub struct RegionStat {
pub index_size: u64,
/// The manifest infoof the region.
pub region_manifest: RegionManifestInfo,
/// The write bytes.
pub write_bytes: u64,
/// The total bytes written of the region since region opened.
pub written_bytes: u64,
/// The latest entry id of topic used by data.
/// **Only used by remote WAL prune.**
pub data_topic_latest_entry_id: u64,
@@ -306,7 +306,7 @@ impl From<&api::v1::meta::RegionStat> for RegionStat {
sst_num: region_stat.sst_num,
index_size: region_stat.index_size,
region_manifest: region_stat.manifest.into(),
write_bytes: region_stat.write_bytes,
written_bytes: region_stat.written_bytes,
data_topic_latest_entry_id: region_stat.data_topic_latest_entry_id,
metadata_topic_latest_entry_id: region_stat.metadata_topic_latest_entry_id,
}

2
src/meta-srv/src/handler/collect_leader_region_handler.rs
View File

@@ -87,7 +87,7 @@ mod tests {
index_size: 0,
data_topic_latest_entry_id: 0,
metadata_topic_latest_entry_id: 0,
write_bytes: 0,
written_bytes: 0,
}
}

2
src/meta-srv/src/handler/failure_handler.rs
View File

@@ -105,7 +105,7 @@ mod tests {
},
data_topic_latest_entry_id: 0,
metadata_topic_latest_entry_id: 0,
write_bytes: 0,
written_bytes: 0,
}
}
acc.stat = Some(Stat {

22
src/meta-srv/src/handler/persist_stats_handler.rs
View File

@@ -51,14 +51,14 @@ const DEFAULT_CONTEXT: InserterContext = InserterContext {
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
struct PersistedRegionStat {
region_id: RegionId,
write_bytess: u64,
written_bytes: u64,
}
impl From<&RegionStat> for PersistedRegionStat {
fn from(stat: &RegionStat) -> Self {
Self {
region_id: stat.id,
write_bytess: stat.write_bytes,
written_bytes: stat.written_bytes,
}
}
}
@@ -94,8 +94,8 @@ fn compute_persist_region_stat(
let write_bytes_delta = persisted_region_stat
.and_then(|persisted_region_stat| {
region_stat
.write_bytes
.checked_sub(persisted_region_stat.write_bytess)
.written_bytes
.checked_sub(persisted_region_stat.written_bytes)
})
.unwrap_or_default();
@@ -273,7 +273,7 @@ mod tests {
fn create_test_region_stat(
table_id: u32,
region_number: u32,
write_bytes: u64,
written_bytes: u64,
engine: &str,
) -> RegionStat {
let region_id = RegionId::new(table_id, region_number);
@@ -294,7 +294,7 @@ mod tests {
manifest_version: 1,
flushed_entry_id: 100,
},
write_bytes,
written_bytes,
data_topic_latest_entry_id: 200,
metadata_topic_latest_entry_id: 200,
}
@@ -326,7 +326,7 @@ mod tests {
let timestamp_millis = 1640995260000; // 2022-01-01 00:01:00 UTC
let persisted_stat = PersistedRegionStat {
region_id: region_stat.id,
write_bytess: 1000, // Previous write bytes
written_bytes: 1000, // Previous write bytes
};
let result = compute_persist_region_stat(
&region_stat,
@@ -354,7 +354,7 @@ mod tests {
let timestamp_millis = 1640995320000; // 2022-01-01 00:02:00 UTC
let persisted_stat = PersistedRegionStat {
region_id: region_stat.id,
write_bytess: 1200, // Previous write bytes (higher than current)
written_bytes: 1200, // Previous write bytes (higher than current)
};
let result = compute_persist_region_stat(
&region_stat,
@@ -382,7 +382,7 @@ mod tests {
let timestamp_millis = 1640995380000; // 2022-01-01 00:03:00 UTC
let persisted_stat = PersistedRegionStat {
region_id: region_stat.id,
write_bytess: 2000, // Same as current write bytes
written_bytes: 2000, // Same as current write bytes
};
let result = compute_persist_region_stat(
&region_stat,
@@ -410,7 +410,7 @@ mod tests {
let timestamp_millis = 1640995620000; // 2022-01-01 00:07:00 UTC
let persisted_stat = PersistedRegionStat {
region_id: region_stat.id,
write_bytess: 1000, // Higher than current, would cause underflow
written_bytes: 1000, // Higher than current, would cause underflow
};
let result = compute_persist_region_stat(
&region_stat,
@@ -507,7 +507,7 @@ mod tests {
region_id,
PersistedRegionStat {
region_id,
write_bytess: 500,
written_bytes: 500,
},
);
let (expected_row, expected_persisted_region_stat) = to_persisted_if_leader(

2
src/meta-srv/src/handler/region_lease_handler.rs
View File

@@ -167,7 +167,7 @@ mod test {
},
data_topic_latest_entry_id: 0,
metadata_topic_latest_entry_id: 0,
write_bytes: 0,
written_bytes: 0,
}
}

6
src/meta-srv/src/selector/weight_compute.rs
View File

@@ -198,7 +198,7 @@ mod tests {
},
data_topic_latest_entry_id: 0,
metadata_topic_latest_entry_id: 0,
write_bytes: 0,
written_bytes: 0,
}],
..Default::default()
}
@@ -227,7 +227,7 @@ mod tests {
},
data_topic_latest_entry_id: 0,
metadata_topic_latest_entry_id: 0,
write_bytes: 0,
written_bytes: 0,
}],
..Default::default()
}
@@ -256,7 +256,7 @@ mod tests {
},
data_topic_latest_entry_id: 0,
metadata_topic_latest_entry_id: 0,
write_bytes: 0,
written_bytes: 0,
}],
..Default::default()
}

2
src/metric-engine/src/utils.rs
View File

@@ -62,7 +62,7 @@ pub fn get_region_statistic(mito: &MitoEngine, region_id: RegionId) -> Option<Re
metadata_flushed_entry_id: metadata_stat.manifest.data_flushed_entry_id(),
metadata_manifest_version: metadata_stat.manifest.data_manifest_version(),
},
write_bytes: metadata_stat.write_bytes + data_stat.write_bytes,
written_bytes: metadata_stat.written_bytes + data_stat.written_bytes,
data_topic_latest_entry_id: data_stat.data_topic_latest_entry_id,
metadata_topic_latest_entry_id: metadata_stat.metadata_topic_latest_entry_id,
}),

4
src/mito2/src/engine/basic_test.rs
View File

@@ -93,7 +93,7 @@ async fn test_write_to_region() {
};
put_rows(&engine, region_id, rows).await;
let region = engine.get_region(region_id).unwrap();
assert!(region.write_bytes.load(Ordering::Relaxed) > 0);
assert!(region.written_bytes.load(Ordering::Relaxed) > 0);
}
#[apply(multiple_log_store_factories)]
@@ -167,7 +167,7 @@ async fn test_region_replay(factory: Option<LogStoreFactory>) {
// The replay won't update the write bytes rate meter.
let region = engine.get_region(region_id).unwrap();
assert_eq!(region.write_bytes.load(Ordering::Relaxed), 0);
assert_eq!(region.written_bytes.load(Ordering::Relaxed), 0);
let request = ScanRequest::default();
let stream = engine.scan_to_stream(region_id, request).await.unwrap();

8
src/mito2/src/region.rs
View File

@@ -134,7 +134,7 @@ pub struct MitoRegion {
/// which means these WAL entries maybe able to be pruned up to `topic_latest_entry_id`.
pub(crate) topic_latest_entry_id: AtomicU64,
/// The total bytes written to the region.
pub(crate) write_bytes: Arc<AtomicU64>,
pub(crate) written_bytes: Arc<AtomicU64>,
/// Memtable builder for the region.
pub(crate) memtable_builder: MemtableBuilderRef,
/// manifest stats
@@ -453,7 +453,7 @@ impl MitoRegion {
let manifest_version = self.stats.manifest_version();
let topic_latest_entry_id = self.topic_latest_entry_id.load(Ordering::Relaxed);
let write_bytes = self.write_bytes.load(Ordering::Relaxed);
let written_bytes = self.written_bytes.load(Ordering::Relaxed);
RegionStatistic {
num_rows,
@@ -469,7 +469,7 @@ impl MitoRegion {
},
data_topic_latest_entry_id: topic_latest_entry_id,
metadata_topic_latest_entry_id: topic_latest_entry_id,
write_bytes,
written_bytes,
}
}
@@ -1217,7 +1217,7 @@ mod tests {
last_compaction_millis: Default::default(),
time_provider: Arc::new(StdTimeProvider),
topic_latest_entry_id: Default::default(),
write_bytes: Arc::new(AtomicU64::new(0)),
written_bytes: Arc::new(AtomicU64::new(0)),
memtable_builder: Arc::new(EmptyMemtableBuilder::default()),
stats: ManifestStats::default(),
};

4
src/mito2/src/region/opener.rs
View File

@@ -303,7 +303,7 @@ impl RegionOpener {
time_provider: self.time_provider.clone(),
topic_latest_entry_id: AtomicU64::new(0),
memtable_builder,
write_bytes: Arc::new(AtomicU64::new(0)),
written_bytes: Arc::new(AtomicU64::new(0)),
stats: self.stats,
})
}
@@ -505,7 +505,7 @@ impl RegionOpener {
last_compaction_millis: AtomicI64::new(now),
time_provider: self.time_provider.clone(),
topic_latest_entry_id: AtomicU64::new(topic_latest_entry_id),
write_bytes: Arc::new(AtomicU64::new(0)),
written_bytes: Arc::new(AtomicU64::new(0)),
memtable_builder,
stats: self.stats.clone(),
};

26
src/mito2/src/region_write_ctx.rs
View File

@@ -107,8 +107,8 @@ pub(crate) struct RegionWriteCtx {
pub(crate) put_num: usize,
/// Rows to delete.
pub(crate) delete_num: usize,
/// Write bytes per second.
pub(crate) write_bytes: Option<Arc<AtomicU64>>,
/// The total bytes written to the region.
pub(crate) written_bytes: Option<Arc<AtomicU64>>,
}
impl RegionWriteCtx {
@@ -117,7 +117,7 @@ impl RegionWriteCtx {
region_id: RegionId,
version_control: &VersionControlRef,
provider: Provider,
write_bytes: Option<Arc<AtomicU64>>,
written_bytes: Option<Arc<AtomicU64>>,
) -> RegionWriteCtx {
let VersionControlData {
version,
@@ -140,7 +140,7 @@ impl RegionWriteCtx {
put_num: 0,
delete_num: 0,
bulk_parts: vec![],
write_bytes,
written_bytes,
}
}
@@ -219,7 +219,7 @@ impl RegionWriteCtx {
}
let mutable_memtable = self.version.memtables.mutable.clone();
let prev_memory_usage = if self.write_bytes.is_some() {
let prev_memory_usage = if self.written_bytes.is_some() {
Some(mutable_memtable.memory_usage())
} else {
None
@@ -257,11 +257,10 @@ impl RegionWriteCtx {
}
}
if let Some(write_bytes) = &self.write_bytes {
if let Some(written_bytes) = &self.written_bytes {
let new_memory_usage = mutable_memtable.memory_usage();
let written_bytes =
new_memory_usage.saturating_sub(prev_memory_usage.unwrap_or_default());
write_bytes.fetch_add(written_bytes as u64, Ordering::Relaxed);
let bytes = new_memory_usage.saturating_sub(prev_memory_usage.unwrap_or_default());
written_bytes.fetch_add(bytes as u64, Ordering::Relaxed);
}
// Updates region sequence and entry id. Since we stores last sequence and entry id in region, we need
// to decrease `next_sequence` and `next_entry_id` by 1.
@@ -298,7 +297,7 @@ impl RegionWriteCtx {
.start_timer();
let mutable_memtable = &self.version.memtables.mutable;
let prev_memory_usage = if self.write_bytes.is_some() {
let prev_memory_usage = if self.written_bytes.is_some() {
Some(mutable_memtable.memory_usage())
} else {
None
@@ -333,11 +332,10 @@ impl RegionWriteCtx {
}
}
if let Some(write_bytes) = &self.write_bytes {
if let Some(written_bytes) = &self.written_bytes {
let new_memory_usage = mutable_memtable.memory_usage();
let written_bytes =
new_memory_usage.saturating_sub(prev_memory_usage.unwrap_or_default());
write_bytes.fetch_add(written_bytes as u64, Ordering::Relaxed);
let bytes = new_memory_usage.saturating_sub(prev_memory_usage.unwrap_or_default());
written_bytes.fetch_add(bytes as u64, Ordering::Relaxed);
}
self.version_control
.set_sequence_and_entry_id(self.next_sequence - 1, self.next_entry_id - 1);

4
src/mito2/src/worker/handle_write.rs
View File

@@ -248,7 +248,7 @@ impl<S> RegionWorkerLoop<S> {
region.region_id,
&region.version_control,
region.provider.clone(),
Some(region.write_bytes.clone()),
Some(region.written_bytes.clone()),
);
e.insert(region_ctx);
@@ -352,7 +352,7 @@ impl<S> RegionWorkerLoop<S> {
region.region_id,
&region.version_control,
region.provider.clone(),
Some(region.write_bytes.clone()),
Some(region.written_bytes.clone()),
);
e.insert(region_ctx);

4
src/store-api/src/region_engine.rs
View File

@@ -479,9 +479,9 @@ pub struct RegionStatistic {
/// The details of the region.
#[serde(default)]
pub manifest: RegionManifestInfo,
/// The write throughput of the region.
#[serde(default)]
pub write_bytes: u64,
/// The total bytes written of the region since region opened.
pub written_bytes: 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.

12
tests/cases/standalone/common/information_schema/region_statistics.result
View File

@@ -24,15 +24,15 @@ Affected Rows: 3
-- SQLNESS SLEEP 3s
-- For regions using different WAL implementations, the manifest size may vary.
-- The remote WAL implementation additionally stores a flushed entry ID when creating the manifest.
SELECT SUM(region_rows), SUM(memtable_size), SUM(sst_size), SUM(index_size)
SELECT SUM(region_rows),SUM(written_bytes_since_open), SUM(memtable_size), SUM(sst_size), SUM(index_size)
FROM INFORMATION_SCHEMA.REGION_STATISTICS WHERE table_id
IN (SELECT TABLE_ID FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 'test' and table_schema = 'public');
+-------------------------------------------------------+---------------------------------------------------------+----------------------------------------------------+------------------------------------------------------+
| sum(information_schema.region_statistics.region_rows) | sum(information_schema.region_statistics.memtable_size) | sum(information_schema.region_statistics.sst_size) | sum(information_schema.region_statistics.index_size) |
+-------------------------------------------------------+---------------------------------------------------------+----------------------------------------------------+------------------------------------------------------+
| 3 | 78 | 0 | 0 |
+-------------------------------------------------------+---------------------------------------------------------+----------------------------------------------------+------------------------------------------------------+
+-------------------------------------------------------+--------------------------------------------------------------------+---------------------------------------------------------+----------------------------------------------------+------------------------------------------------------+
| sum(information_schema.region_statistics.region_rows) | sum(information_schema.region_statistics.written_bytes_since_open) | sum(information_schema.region_statistics.memtable_size) | sum(information_schema.region_statistics.sst_size) | sum(information_schema.region_statistics.index_size) |
+-------------------------------------------------------+--------------------------------------------------------------------+---------------------------------------------------------+----------------------------------------------------+------------------------------------------------------+
| 3 | 78 | 78 | 0 | 0 |
+-------------------------------------------------------+--------------------------------------------------------------------+---------------------------------------------------------+----------------------------------------------------+------------------------------------------------------+
SELECT data_length, index_length, avg_row_length, table_rows FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 'test';

2
tests/cases/standalone/common/information_schema/region_statistics.sql
View File

@@ -19,7 +19,7 @@ INSERT INTO test VALUES
-- SQLNESS SLEEP 3s
-- For regions using different WAL implementations, the manifest size may vary.
-- The remote WAL implementation additionally stores a flushed entry ID when creating the manifest.
SELECT SUM(region_rows), SUM(memtable_size), SUM(sst_size), SUM(index_size)
SELECT SUM(region_rows),SUM(written_bytes_since_open), SUM(memtable_size), SUM(sst_size), SUM(index_size)
FROM INFORMATION_SCHEMA.REGION_STATISTICS WHERE table_id
IN (SELECT TABLE_ID FROM INFORMATION_SCHEMA.TABLES WHERE table_name = 'test' and table_schema = 'public');

17
tests/cases/standalone/common/system/information_schema.result
View File

@@ -317,18 +317,19 @@ select * from information_schema.columns order by table_schema, table_name, colu
| greptime | information_schema | region_peers | table_catalog | 1 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | No | string | | |
| greptime | information_schema | region_peers | table_name | 3 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | No | string | | |
| greptime | information_schema | region_peers | table_schema | 2 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | No | string | | |
| greptime | information_schema | region_statistics | disk_size | 5 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | engine | 11 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | Yes | string | | |
| greptime | information_schema | region_statistics | index_size | 10 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | manifest_size | 7 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | memtable_size | 6 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | disk_size | 6 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | engine | 12 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | Yes | string | | |
| greptime | information_schema | region_statistics | index_size | 11 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | manifest_size | 8 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | memtable_size | 7 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | region_id | 1 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | No | bigint unsigned | | |
| greptime | information_schema | region_statistics | region_number | 3 | | | 10 | 0 | | | | | | select,insert | | UInt32 | int unsigned | FIELD | | No | int unsigned | | |
| greptime | information_schema | region_statistics | region_role | 12 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | Yes | string | | |
| greptime | information_schema | region_statistics | region_role | 13 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | Yes | string | | |
| greptime | information_schema | region_statistics | region_rows | 4 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | sst_num | 9 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | sst_size | 8 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | sst_num | 10 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | sst_size | 9 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | region_statistics | table_id | 2 | | | 10 | 0 | | | | | | select,insert | | UInt32 | int unsigned | FIELD | | No | int unsigned | | |
| greptime | information_schema | region_statistics | written_bytes_since_open | 5 | | | 20 | 0 | | | | | | select,insert | | UInt64 | bigint unsigned | FIELD | | Yes | bigint unsigned | | |
| greptime | information_schema | routines | character_maximum_length | 7 | | | 19 | 0 | | | | | | select,insert | | Int64 | bigint | FIELD | | No | bigint | | |
| greptime | information_schema | routines | character_octet_length | 8 | | | 19 | 0 | | | | | | select,insert | | Int64 | bigint | FIELD | | No | bigint | | |
| greptime | information_schema | routines | character_set_client | 29 | 2147483647 | 2147483647 | | | | utf8 | utf8_bin | | | select,insert | | String | string | FIELD | | No | string | | |