pub struct DdlContext {
pub node_manager: NodeManagerRef,
pub cache_invalidator: CacheInvalidatorRef,
pub memory_region_keeper: MemoryRegionKeeperRef,
pub leader_region_registry: LeaderRegionRegistryRef,
pub table_metadata_manager: TableMetadataManagerRef,
pub table_metadata_allocator: TableMetadataAllocatorRef,
pub flow_metadata_manager: FlowMetadataManagerRef,
pub flow_metadata_allocator: FlowMetadataAllocatorRef,
pub region_failure_detector_controller: RegionFailureDetectorControllerRef,
}
Expand description
The context of ddl.
Fields§
§node_manager: NodeManagerRef
Sends querying and requests to nodes.
cache_invalidator: CacheInvalidatorRef
Cache invalidation.
memory_region_keeper: MemoryRegionKeeperRef
Keep tracking operating regions.
leader_region_registry: LeaderRegionRegistryRef
The leader region registry.
table_metadata_manager: TableMetadataManagerRef
Table metadata manager.
table_metadata_allocator: TableMetadataAllocatorRef
Allocator for table metadata.
flow_metadata_manager: FlowMetadataManagerRef
Flow metadata manager.
flow_metadata_allocator: FlowMetadataAllocatorRef
Allocator for flow metadata.
region_failure_detector_controller: RegionFailureDetectorControllerRef
controller of region failure detector.
Implementations§
Source§impl DdlContext
impl DdlContext
Sourcepub async fn register_failure_detectors(
&self,
detecting_regions: Vec<DetectingRegion>,
)
pub async fn register_failure_detectors( &self, detecting_regions: Vec<DetectingRegion>, )
Notifies the RegionSupervisor to register failure detector of new created regions.
The datanode may crash without sending a heartbeat that contains information about newly created regions, which may prevent the RegionSupervisor from detecting failures in these newly created regions.
Sourceasync fn deregister_failure_detectors(
&self,
detecting_regions: Vec<DetectingRegion>,
)
async fn deregister_failure_detectors( &self, detecting_regions: Vec<DetectingRegion>, )
Notifies the RegionSupervisor to remove failure detectors.
Once the regions were dropped, subsequent heartbeats no longer include these regions. Therefore, we should remove the failure detectors for these dropped regions.
Trait Implementations§
Source§impl Clone for DdlContext
impl Clone for DdlContext
Source§fn clone(&self) -> DdlContext
fn clone(&self) -> DdlContext
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreAuto Trait Implementations§
impl Freeze for DdlContext
impl !RefUnwindSafe for DdlContext
impl Send for DdlContext
impl Sync for DdlContext
impl Unpin for DdlContext
impl !UnwindSafe for DdlContext
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