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From "Karthick Sankarachary (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2435) A Sharding Split Policy For Load-Sharing Index Writes
Date Sun, 02 May 2010 19:53:56 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2435?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthick Sankarachary updated LUCENE-2435:
------------------------------------------

    Attachment: LUCENE-2435.patch

> A Sharding Split Policy For Load-Sharing Index Writes
> -----------------------------------------------------
>
>                 Key: LUCENE-2435
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2435
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Index
>    Affects Versions: 3.0.1
>            Reporter: Karthick Sankarachary
>         Attachments: LUCENE-2435.patch
>
>
> (Please note that the feature described in LUCENE-2425 is required reading for this issue.)

> The sharding split policy builds on the remoting split policy, treating each sub-index
as a shard of the split index. Optionally, the super-index on which the split writer is built
may also be considered to be a shard. The motivation for this policy is to allow a given index
to be partitioned across multiple nodes (that define a cluster), which helps to (a) load-balance
document writes across the nodes in that cluster and (b) serve search requests from a (narrower)
set of sub-indices (that the split rule routes the query to).
> Unlike other sharding 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 shards
on the fly.

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