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  1. Solr
  2. SOLR-10479

support HttpShardHandlerFactory.loadBalancerRequests(MinimumAbsolute|MaximumFraction) options

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Details

    • New Feature
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • None
    • 6.7, 7.0
    • None
    • None

    Description

      If a request sends no timeAllowed threshold (or if it sends a very generous threshold) then that request can potentially be retried on 'very many' servers in the cloud.

      Via the HttpShardHandlerFactory.loadBalancerRequests(MinimumAbsolute|MaximumFraction) options the number of servers tried can be restricted via configuration e.g.

      <shardHandlerFactory name="shardHandlerFactory" class="solr.HttpShardHandlerFactory">
        <int   name="loadBalancerRequestsMinimumAbsolute">2</int>
        <float name="loadBalancerRequestsMaximumFraction">0.50</float>
      </shardHandlerFactory>
      

      would on a six-replica-and-all-replicas-active collection/shard restrict sending to three replicas i.e. max(2, 0.50 x 6) and if the collection/shard temporarily becomes three-replicas-active-and-three-replicas-recovering-or-down then sending is restricted to two replicas i.e. max(2, 0.50 x 3) temporarily.

      Attachments

        1. SOLR-10479.patch
          15 kB
          Christine Poerschke
        2. SOLR-10479.patch
          12 kB
          Christine Poerschke

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          People

            cpoerschke Christine Poerschke
            cpoerschke Christine Poerschke
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            Dates

              Created:
              Updated:
              Resolved: