Package org.apache.solr.handler.component

Class ParallelHttpShardHandler

java.lang.Object

org.apache.solr.handler.component.ShardHandler

org.apache.solr.handler.component.HttpShardHandler

org.apache.solr.handler.component.ParallelHttpShardHandler

@NotThreadSafe
public class ParallelHttpShardHandler
extends HttpShardHandler

A version of HttpShardHandler optimized for massively-sharded collections.

Uses a HttpShardHandlerFactory.commExecutor thread for all work related to outgoing requests, allowing HttpShardHandler.submit(ShardRequest, String, ModifiableSolrParams) to return more quickly. (See HttpShardHandler for comparison.)

The additional focus on parallelization makes this an ideal implementation for collections with many shards.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.handler.component.HttpShardHandler

HttpShardHandler.SimpleSolrResponse

Field Summary

Fields inherited from class org.apache.solr.handler.component.HttpShardHandler

lbClient, ONLY_NRT_REPLICAS, responseFutureMap, responses

Constructor Summary

Constructors

Constructor	Description
ParallelHttpShardHandler(ParallelHttpShardHandlerFactory httpShardHandlerFactory)

Method Summary

Modifier and Type	Method	Description
void	cancelAll()	Cancels all uncompleted requests managed by this instance
protected void	makeShardRequest(ShardRequest sreq, String shard, org.apache.solr.common.params.ModifiableSolrParams params, org.apache.solr.client.solrj.impl.LBSolrClient.Req lbReq, HttpShardHandler.SimpleSolrResponse ssr, ShardResponse srsp, long startTimeNS)	Do the actual work of sending a request to a shard and receiving the response
protected boolean	responsesPending()

Methods inherited from class org.apache.solr.handler.component.HttpShardHandler

createQueryRequest, getShardHandlerFactory, getShardsTolerantAsBool, prepDistributed, recordShardSubmitError, submit, takeCompletedIncludingErrors, takeCompletedOrError, transformResponse

Methods inherited from class org.apache.solr.handler.component.ShardHandler

setShardAttributesToParams

Methods inherited from class java.lang.Object

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

Constructor Details

ParallelHttpShardHandler

public ParallelHttpShardHandler(ParallelHttpShardHandlerFactory httpShardHandlerFactory)

Method Details

responsesPending

protected boolean responsesPending()

Overrides:

responsesPending in class HttpShardHandler

makeShardRequest

protected void makeShardRequest(ShardRequest sreq,
 String shard,
 org.apache.solr.common.params.ModifiableSolrParams params,
 org.apache.solr.client.solrj.impl.LBSolrClient.Req lbReq,
 HttpShardHandler.SimpleSolrResponse ssr,
 ShardResponse srsp,
 long startTimeNS)

Description copied from class: HttpShardHandler

Do the actual work of sending a request to a shard and receiving the response

Overrides:

makeShardRequest in class HttpShardHandler

Parameters:

sreq - the request to make

shard - the shard to address

params - request parameters

lbReq - the load balanced request

ssr - the response collector part 1

srsp - the shard response collector

startTimeNS - the time at which the request was initiated, likely just prior to calling this method.

cancelAll

public void cancelAll()

Description copied from class: ShardHandler

Cancels all uncompleted requests managed by this instance

Overrides:

cancelAll in class HttpShardHandler