org.apache.drill.exec.resourcemgr.config

Class QueryQueueConfigImpl

java.lang.Object

org.apache.drill.exec.resourcemgr.config.QueryQueueConfigImpl

All Implemented Interfaces:

QueryQueueConfig

public class QueryQueueConfigImpl
extends Object
implements QueryQueueConfig

Parses and initialize QueueConfiguration for a ResourcePool. It also generates a unique UUID for each queue which will be later used by Drillbit to store in Zookeeper along with beans.DrillbitEndpoint. This UUID is used in the leader election mechanism in which Drillbit participates for each of the configured rm queue.

Constructor Summary

Constructors

Constructor and Description
QueryQueueConfigImpl(com.typesafe.config.Config queueConfig, String poolName, NodeResources queueNodeResource)

Method Summary

Modifier and Type	Method and Description
int	getMaxAdmissibleQueries()
long	getMaxQueryMemoryInMBPerNode()
long	getMaxQueryTotalMemoryInMB(int numClusterNodes) Given number of available nodes in the cluster what is the max memory in MB a query in this queue can be assigned cluster wide
int	getMaxWaitingQueries()
String	getQueueId()
String	getQueueName()
long	getQueueTotalMemoryInMB(int numClusterNodes) Total memory share of this queue in the cluster based on per node resource share.
int	getWaitTimeoutInMs()
String	toString()
boolean	waitForPreferredNodes() Determines if admitted queries in this queue should wait in the queue if resources on the preferred assigned nodes of a query determined by planner is unavailable.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryQueueConfigImpl

public QueryQueueConfigImpl(com.typesafe.config.Config queueConfig,
                            String poolName,
                            NodeResources queueNodeResource)
                     throws RMConfigException

Throws:

RMConfigException

Method Detail

getQueueId

public String getQueueId()

Specified by:

getQueueId in interface QueryQueueConfig

getQueueName

public String getQueueName()

Specified by:

getQueueName in interface QueryQueueConfig

getQueueTotalMemoryInMB

public long getQueueTotalMemoryInMB(int numClusterNodes)

Total memory share of this queue in the cluster based on per node resource share. It assumes that the cluster is made up of homogeneous nodes in terms of resources

Specified by:

getQueueTotalMemoryInMB in interface QueryQueueConfig

Parameters:

numClusterNodes - total number of available cluster nodes which can participate in this queue

Returns:

queue memory share in MB

getMaxQueryMemoryInMBPerNode

public long getMaxQueryMemoryInMBPerNode()

Specified by:

getMaxQueryMemoryInMBPerNode in interface QueryQueueConfig

Returns:

Maximum query memory (in MB) that a query in this queue can consume on a node

getMaxQueryTotalMemoryInMB

public long getMaxQueryTotalMemoryInMB(int numClusterNodes)

Description copied from interface: QueryQueueConfig

Given number of available nodes in the cluster what is the max memory in MB a query in this queue can be assigned cluster wide

Specified by:

getMaxQueryTotalMemoryInMB in interface QueryQueueConfig

Parameters:

numClusterNodes - number of available cluster nodes

Returns:

Maximum query memory (in MB) in this queue

waitForPreferredNodes

public boolean waitForPreferredNodes()

Description copied from interface: QueryQueueConfig

Determines if admitted queries in this queue should wait in the queue if resources on the preferred assigned nodes of a query determined by planner is unavailable.

Specified by:

waitForPreferredNodes in interface QueryQueueConfig

Returns:

true indicates an admitted query to wait until resources on all the preferred nodes are available or wait until timeout is reached, false indicates an admitted query to not wait and find other nodes with available resources if resources on a preferred node is unavailable.

getMaxAdmissibleQueries

public int getMaxAdmissibleQueries()

Specified by:

getMaxAdmissibleQueries in interface QueryQueueConfig

Returns:

Maximum number of queries that can be admitted in the queue

getMaxWaitingQueries

public int getMaxWaitingQueries()

Specified by:

getMaxWaitingQueries in interface QueryQueueConfig

Returns:

Maximum number of queries that will be allowed to wait in the queue before failing a query right away

getWaitTimeoutInMs

public int getWaitTimeoutInMs()

Specified by:

getWaitTimeoutInMs in interface QueryQueueConfig

Returns:

Maximum time in milliseconds for which a query can be in waiting state inside a queue

toString

public String toString()

Overrides:

toString in class Object