Interface NodeAllocator

All Superinterfaces:

AutoCloseable, Closeable

public interface NodeAllocator
extends Closeable

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	NodeAllocator.NodeLease

Method Summary

Modifier and Type	Method	Description
NodeAllocator.NodeLease	acquire(NodeRequirements nodeRequirements, io.airlift.units.DataSize memoryRequirement, TaskExecutionClass executionClass)	Requests acquisition of node.
void	close()

Method Details

acquire

NodeAllocator.NodeLease acquire(NodeRequirements nodeRequirements,
 io.airlift.units.DataSize memoryRequirement,
 TaskExecutionClass executionClass)

Requests acquisition of node. Obtained node can be obtained via NodeAllocator.NodeLease.getNode() method. The node may not be available immediately. Calling party needs to wait until future returned is done. Requests from different queries (as denoted by session argument passed to NodeAllocatorService.getNodeAllocator(io.trino.Session)) will be served in fair manner. It is obligatory for the calling party to release all the leases they obtained via NodeAllocator.NodeLease.release().

close

void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable