Package org.apache.arrow.memory

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

See: Description

Interface Summary

Interface	Description
AllocationListener	An allocation listener being notified for allocation/deallocation
AllocationReservation	Supports cumulative allocation reservation.
BufferAllocator	Wrapper class to deal with byte buffer allocation.
BufferManager	Manages a list of ArrowBufs that can be reallocated as needed.
ValueWithKeyIncluded<K>	Helper Iface to generify a value to be included in the map where key is part of the value

Class Summary

Class	Description
AllocationManager	Manages the relationship between one or more allocators and a particular UDLE.
ArrowByteBufAllocator	An implementation of ByteBufAllocator that wraps a Arrow BufferAllocator.
BaseAllocator
BoundsChecking
LowCostIdentityHashMap<K,V extends ValueWithKeyIncluded<K>>	Highly specialized IdentityHashMap that implements only partial Map APIs It incurs low initial cost (just two elements by default) It assumes Value includes the Key - Implements @ValueWithKeyIncluded iface that provides "getKey" method
RootAllocator	The root allocator for using direct memory inside a Drillbit.

Enum Summary

Enum	Description
BaseAllocator.Verbosity

Exception Summary

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

Package org.apache.arrow.memory Description

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