Module datafusion::execution
source · [−]Expand description
This module contains the shared state available at different parts of query planning and execution
Runtime Environment
runtime_env::RuntimeEnv can be created from a runtime_env::RuntimeConfig and
stores state to be shared across multiple sessions. In most applications there will
be a single runtime_env::RuntimeEnv for the entire process
Session Context
context::SessionContext can be created from a context::SessionConfig and
an optional runtime_env::RuntimeConfig, and stores the state for a particular
query session.
In particular context::SessionState is the information available to query planning
Task Context
context::TaskContext is typically created from a context::SessionContext or
context::SessionState, and represents the state available to query execution.
In particular it is the state passed to crate::physical_plan::ExecutionPlan::execute
Re-exports
pub use disk_manager::DiskManager;pub use memory_manager::human_readable_size;pub use memory_manager::MemoryConsumer;pub use memory_manager::MemoryConsumerId;pub use memory_manager::MemoryManager;pub use registry::FunctionRegistry;Modules
SessionContext contains methods for registering data sources and executing queries
Manages files generated during query execution, files are hashed among the directories listed in RuntimeConfig::local_dirs.
Manages all available memory during query execution
User facing options for the file formats readers
FunctionRegistry trait
Execution runtime environment that holds object Store, memory manager, disk manager and various system level components that are used during physical plan execution.