TableRepartManager

common_meta::key::table_repart

Struct TableRepartManager 

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pub struct TableRepartManager {
    kv_backend: KvBackendRef,
}

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§kv_backend: KvBackendRef

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impl TableRepartManager

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pub fn new(kv_backend: KvBackendRef) -> Self

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pub fn build_create_txn( &self, table_id: TableId, table_repart_value: &TableRepartValue, ) -> Result<(Txn, impl FnOnce(&mut TxnOpGetResponseSet) -> TableRepartValueDecodeResult + use<>)>

Builds a create table repart transaction, it expected the __table_repart/{table_id} wasn’t occupied.

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pub fn build_update_txn( &self, table_id: TableId, current_table_repart_value: &DeserializedValueWithBytes<TableRepartValue>, new_table_repart_value: &TableRepartValue, ) -> Result<(Txn, impl FnOnce(&mut TxnOpGetResponseSet) -> TableRepartValueDecodeResult + use<>)>

Builds a update table repart transaction, it expected the remote value equals the current_table_repart_value. It retrieves the latest value if the comparing failed.

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pub async fn get(&self, table_id: TableId) -> Result<Option<TableRepartValue>>

Returns the TableRepartValue.

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async fn get_inner(&self, table_id: TableId) -> Result<Option<TableRepartValue>>

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pub async fn get_with_raw_bytes( &self, table_id: TableId, ) -> Result<Option<DeserializedValueWithBytes<TableRepartValue>>>

Returns the TableRepartValue wrapped with DeserializedValueWithBytes.

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async fn get_with_raw_bytes_inner( &self, table_id: TableId, ) -> Result<Option<DeserializedValueWithBytes<TableRepartValue>>>

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pub async fn batch_get( &self, table_ids: &[TableId], ) -> Result<Vec<Option<TableRepartValue>>>

Returns batch of TableRepartValue that respects the order of table_ids.

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pub async fn batch_get_with_raw_bytes( &self, table_ids: &[TableId], ) -> Result<Vec<Option<DeserializedValueWithBytes<TableRepartValue>>>>

Returns batch of TableRepartValue wrapped with DeserializedValueWithBytes.

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async fn batch_get_inner( &self, table_ids: &[TableId], ) -> Result<Vec<Option<DeserializedValueWithBytes<TableRepartValue>>>>

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pub async fn update_mappings( &self, src: RegionId, dst: &[RegionId], ) -> Result<()>

Updates mappings from src region to dst regions. Should be called once repartition is done.

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pub async fn remove_mappings( &self, src: RegionId, dsts: &[RegionId], ) -> Result<()>

Removes mappings from src region to dst regions. Should be called once files from src region are cleaned up in dst regions.

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pub async fn get_dst_regions( &self, src_region: RegionId, ) -> Result<Option<BTreeSet<RegionId>>>

Returns the destination regions for a given source region.

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