org.apache.cassandra.service

Class AbstractReadExecutor.NeverSpeculatingReadExecutor

java.lang.Object

org.apache.cassandra.service.AbstractReadExecutor

org.apache.cassandra.service.AbstractReadExecutor.NeverSpeculatingReadExecutor

Enclosing class:

AbstractReadExecutor

public static class AbstractReadExecutor.NeverSpeculatingReadExecutor
extends AbstractReadExecutor

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.service.AbstractReadExecutor

AbstractReadExecutor.NeverSpeculatingReadExecutor

Field Summary

Fields inherited from class org.apache.cassandra.service.AbstractReadExecutor

command, handler, targetReplicas, traceState

Constructor Summary

Constructors

Constructor and Description
NeverSpeculatingReadExecutor(Keyspace keyspace, ReadCommand command, ConsistencyLevel consistencyLevel, java.util.List<java.net.InetAddress> targetReplicas, long queryStartNanoTime)

Method Summary

Modifier and Type	Method and Description
void	executeAsync() send the initial set of requests
java.util.Collection<java.net.InetAddress>	getContactedReplicas() Get the replicas involved in the [finished] request.
void	maybeTryAdditionalReplicas() Perform additional requests if it looks like the original will time out.

Methods inherited from class org.apache.cassandra.service.AbstractReadExecutor

get, getReadExecutor, makeDataRequests, makeDigestRequests

Methods inherited from class java.lang.Object

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

Constructor Detail

NeverSpeculatingReadExecutor

public NeverSpeculatingReadExecutor(Keyspace keyspace,
                                    ReadCommand command,
                                    ConsistencyLevel consistencyLevel,
                                    java.util.List<java.net.InetAddress> targetReplicas,
                                    long queryStartNanoTime)

Method Detail

executeAsync

public void executeAsync()

Description copied from class: AbstractReadExecutor

send the initial set of requests

Specified by:

executeAsync in class AbstractReadExecutor

maybeTryAdditionalReplicas

public void maybeTryAdditionalReplicas()

Description copied from class: AbstractReadExecutor

Perform additional requests if it looks like the original will time out. May block while it waits to see if the original requests are answered first.

Specified by:

maybeTryAdditionalReplicas in class AbstractReadExecutor

getContactedReplicas

public java.util.Collection<java.net.InetAddress> getContactedReplicas()

Description copied from class: AbstractReadExecutor

Get the replicas involved in the [finished] request.

Specified by:

getContactedReplicas in class AbstractReadExecutor

Returns:

target replicas + the extra replica, *IF* we speculated.