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From "Karthick Sankarachary (JIRA)" <>
Subject [jira] Created: (LUCENE-2434) A Mirroring Split Policy For Load-Balancing Search Requests
Date Sun, 02 May 2010 19:49:56 GMT
A Mirroring Split Policy For Load-Balancing Search Requests

                 Key: LUCENE-2434
             Project: Lucene - Java
          Issue Type: New Feature
            Reporter: Karthick Sankarachary
         Attachments: LUCENE-2434.patch

(Please note that the feature described in LUCENE-2425 is required reading for this issue.)

The mirroring split policy builds on the remoting split policy, treating each sub-index as
a mirror of the super-index (upon which the split writer is built). The motivation for this
policy is to allow a given index to be available on multiple nodes (that define a cluster),
which helps to load-balance search requests across the nodes in that cluster, not to mention
implement fail-over for index searchers.

Unlike other mirroring solutions for Lucene, this approach gives users the ability to (a)
pick and choose the types of directories underlying the mirror, and (b) add/remove mirrors
on the fly. However, note that the latter capability has not yet been implemented, although
it will be soon.

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