Package org.apache.drill.exec.memory

Memory Allocation, Account and Management See the README.md file in this directory for detailed information about Drill's memory allocation subsystem.

See: Description

Interface Summary

Interface	Description
AllocationReservation	Supports cumulative allocation reservation.
BufferAllocator	Wrapper class to deal with byte buffer allocation.

Class Summary

Class	Description
Accountant	Provides a concurrent way to manage account for memory usage without locking.
AllocationManager	Manages the relationship between one or more allocators and a particular UDLE.
BaseAllocator
BoundsChecking
BoundsCheckingTest
DrillByteBufAllocator	An extend of AbstractByteBufAllocator that wraps a Drill BufferAllocator.
RootAllocator	The root allocator for using direct memory inside a Drillbit.
RootAllocatorFactory
TestAccountant
TestAllocators
TestBaseAllocator
TestEndianess

Enum Summary

Enum	Description
Accountant.AllocationOutcome	Describes the type of outcome that occurred when trying to account for allocation of memory.
BaseAllocator.Verbosity

Exception Summary

Exception	Description
AllocatorClosedException	Exception thrown when a closed BufferAllocator is used.

Package org.apache.drill.exec.memory Description

Memory Allocation, Account and Management See the README.md file in this directory for detailed information about Drill's memory allocation subsystem.