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https://issues.apache.org/jira/browse/SOLR-4449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13577693#comment-13577693
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philip hoy edited comment on SOLR-4449 at 2/13/13 4:41 PM:
-----------------------------------------------------------
The patch implements backup requests only for the methods used by the
HttpShardHandler not for Solrj client type use.
The load balancer may be configured using something like the following:
{code:xml}
<shardHandlerFactory class="HttpBackupRequestShardHandlerFactory">
<int name="backupRequestDelay">1000</int>
<int name="maximumConcurrentRequests">2</int>
<!-- all the HttpShardHandlerFactory args are available too. -->
</shardHandlerFactory>
{code}
was (Author: phloy):
The patch implements backup requests only for the methods used by the
HttpShardHandler not for Solrj client type use.
The load balancer may be configured using something like the following:
{code:xml}
<shardHandlerFactory class="HttpBackupRequestShardHandlerFactory">
<int name="backupRequestDelay">1000</int>
<int name="maximumConcurrentRequests">2</int>
</shardHandlerFactory>
{code}
> Enable backup requests for the internal solr load balancer
> ----------------------------------------------------------
>
> Key: SOLR-4449
> URL: https://issues.apache.org/jira/browse/SOLR-4449
> Project: Solr
> Issue Type: New Feature
> Components: SolrCloud
> Reporter: philip hoy
> Priority: Minor
> Attachments: SOLR-4449.patch
>
>
> Add the ability to configure the built-in solr load balancer such that it
> submits a backup request to the next server in the list if the initial
> request takes too long. Employing such an algorithm could improve the latency
> of the 9xth percentile albeit at the expense of increasing overall load due
> to additional requests.
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