Package org.apache.druid.client

Class CachingClusteredClient

java.lang.Object

org.apache.druid.client.CachingClusteredClient

All Implemented Interfaces:

org.apache.druid.query.QuerySegmentWalker

public class CachingClusteredClient
extends Object
implements org.apache.druid.query.QuerySegmentWalker

This is the class on the Broker that is responsible for making native Druid queries to a cluster of data servers. The main user of this class is ClientQuerySegmentWalker. In tests, its behavior is partially mimicked by TestClusterQuerySegmentWalker.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CachingClusteredClient.TimelineConverter<T extends org.apache.druid.timeline.Overshadowable<T>>	Helper class to build a new timeline of filtered segments.

Constructor Summary

Constructors

Constructor

Description

CachingClusteredClient(org.apache.druid.query.QueryToolChestWarehouse warehouse, TimelineServerView serverView, Cache cache, com.fasterxml.jackson.databind.ObjectMapper objectMapper, CachePopulator cachePopulator, CacheConfig cacheConfig, DruidHttpClientConfig httpClientConfig, BrokerParallelMergeConfig parallelMergeConfig, ForkJoinPool pool, QueryScheduler scheduler, org.apache.druid.java.util.emitter.service.ServiceEmitter emitter)

Method Summary

Modifier and Type	Method	Description
<T> org.apache.druid.query.QueryRunner<T>	getQueryRunnerForIntervals(org.apache.druid.query.Query<T> query, Iterable<org.joda.time.Interval> intervals)
<T> org.apache.druid.query.QueryRunner<T>	getQueryRunnerForSegments(org.apache.druid.query.Query<T> query, Iterable<org.apache.druid.query.SegmentDescriptor> specs)

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingClusteredClient

@Inject
public CachingClusteredClient(org.apache.druid.query.QueryToolChestWarehouse warehouse,
                              TimelineServerView serverView,
                              Cache cache,
                              com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                              CachePopulator cachePopulator,
                              CacheConfig cacheConfig,
                              DruidHttpClientConfig httpClientConfig,
                              BrokerParallelMergeConfig parallelMergeConfig,
                              ForkJoinPool pool,
                              QueryScheduler scheduler,
                              org.apache.druid.java.util.emitter.service.ServiceEmitter emitter)

Method Detail

getQueryRunnerForIntervals

public <T> org.apache.druid.query.QueryRunner<T> getQueryRunnerForIntervals(org.apache.druid.query.Query<T> query,
                                                                            Iterable<org.joda.time.Interval> intervals)

Specified by:

getQueryRunnerForIntervals in interface org.apache.druid.query.QuerySegmentWalker

getQueryRunnerForSegments

public <T> org.apache.druid.query.QueryRunner<T> getQueryRunnerForSegments(org.apache.druid.query.Query<T> query,
                                                                           Iterable<org.apache.druid.query.SegmentDescriptor> specs)

Specified by:

getQueryRunnerForSegments in interface org.apache.druid.query.QuerySegmentWalker