Package org.apache.druid.server

Class ClientQuerySegmentWalker

java.lang.Object

org.apache.druid.server.ClientQuerySegmentWalker

All Implemented Interfaces:

org.apache.druid.query.QuerySegmentWalker

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

Query handler for the Broker processes (see CliBroker).

This class is responsible for:

1) Running queries on the cluster using its 'clusterClient' 2) Running queries locally (when all datasources are global) using its 'localClient' 3) Inlining subqueries if necessary, in service of the above two goals

Constructor Summary

Constructors

Constructor

Description

ClientQuerySegmentWalker(org.apache.druid.java.util.emitter.service.ServiceEmitter emitter, org.apache.druid.query.QuerySegmentWalker clusterClient, org.apache.druid.query.QuerySegmentWalker localClient, org.apache.druid.query.QueryToolChestWarehouse warehouse, org.apache.druid.segment.join.JoinableFactory joinableFactory, RetryQueryRunnerConfig retryConfig, com.fasterxml.jackson.databind.ObjectMapper objectMapper, ServerConfig serverConfig, Cache cache, CacheConfig cacheConfig, SubqueryGuardrailHelper subqueryGuardrailHelper, SubqueryCountStatsProvider subqueryStatsProvider)

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

ClientQuerySegmentWalker

public ClientQuerySegmentWalker(org.apache.druid.java.util.emitter.service.ServiceEmitter emitter,
                                org.apache.druid.query.QuerySegmentWalker clusterClient,
                                org.apache.druid.query.QuerySegmentWalker localClient,
                                org.apache.druid.query.QueryToolChestWarehouse warehouse,
                                org.apache.druid.segment.join.JoinableFactory joinableFactory,
                                RetryQueryRunnerConfig retryConfig,
                                com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                                ServerConfig serverConfig,
                                Cache cache,
                                CacheConfig cacheConfig,
                                SubqueryGuardrailHelper subqueryGuardrailHelper,
                                SubqueryCountStatsProvider subqueryStatsProvider)

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