org.apache.drill.exec.work.foreman.rm

Class DynamicResourceManager

java.lang.Object

org.apache.drill.exec.work.foreman.rm.DynamicResourceManager

All Implemented Interfaces:

ResourceManager

public class DynamicResourceManager
extends Object
implements ResourceManager

Wrapper around the default and/or distributed resource managers to allow dynamically enabling and disabling queueing.

Field Summary

Fields

Modifier and Type	Field and Description
long	nextUpdateTime
int	recheckDelayMs

Constructor Summary

Constructors

Constructor and Description
DynamicResourceManager(DrillbitContext context)

Method Summary

Modifier and Type	Method and Description
ResourceManager	activeRM()
void	close()
int	cpusPerNode()
long	memoryPerNode() Returns the memory, in bytes, assigned to each node in a Drill cluster.
QueryResourceManager	newQueryRM(Foreman foreman) Create a resource manager to execute a query.
QueryResourceAllocator	newResourceAllocator(QueryContext queryContext) Create a resource manager to prepare or describe a query.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

nextUpdateTime

public long nextUpdateTime

recheckDelayMs

public final int recheckDelayMs

See Also:

Constant Field Values

Constructor Detail

DynamicResourceManager

public DynamicResourceManager(DrillbitContext context)

Method Detail

activeRM

public ResourceManager activeRM()

memoryPerNode

public long memoryPerNode()

Description copied from interface: ResourceManager

Returns the memory, in bytes, assigned to each node in a Drill cluster. Drill requires that nodes are symmetrical. So, knowing the memory on any one node also gives the memory on all other nodes.

Specified by:

memoryPerNode in interface ResourceManager

Returns:

the memory, in bytes, available in each Drillbit

cpusPerNode

public int cpusPerNode()

Specified by:

cpusPerNode in interface ResourceManager

newResourceAllocator

public QueryResourceAllocator newResourceAllocator(QueryContext queryContext)

Description copied from interface: ResourceManager

Create a resource manager to prepare or describe a query. In this form, no queuing is done, but the plan is created as if queuing had been done. Used when executing EXPLAIN PLAN.

Specified by:

newResourceAllocator in interface ResourceManager

Returns:

a resource manager for the query

newQueryRM

public QueryResourceManager newQueryRM(Foreman foreman)

Description copied from interface: ResourceManager

Create a resource manager to execute a query.

Specified by:

newQueryRM in interface ResourceManager

Parameters:

foreman - Foreman which manages the execution

Returns:

a resource manager for the query

close

public void close()

Specified by:

close in interface ResourceManager