[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-472) Runtime creation of new shards

[Sanne Grinovero (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-472?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=38902#action_38902 ] 

Sanne Grinovero commented on HSEARCH-472:
-----------------------------------------

true, clustering would be problematic - a notification to clients must be send about the full list of available shards; I'd implement it with Infinispan, providing a shared cache containing {shard-business-key, DP configuration} but wouldn't like to introduce Infinispan at this level.

The use case would be when sharding by a business key, for example city name for addresses, and a new city name is inserted in the database while previously unknown: a new shard should be started.
Sharding by business key is quite cool as it can enable usage of HSEARCH-251

> Runtime creation of new shards
> ------------------------------
>
>                 Key: HSEARCH-472
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-472
>             Project: Hibernate Search
>          Issue Type: New Feature
>          Components: query
>    Affects Versions: 3.2.0.Beta1
>            Reporter: Dobes Vandermeer
>            Assignee: Emmanuel Bernard
>            Priority: Minor
>             Fix For: 3.3.0.Beta3
>
>
> Hibernate Search's shard support has added the ability to select a shard based on a parameter of the query; however, you must use a fixed number of shards.  In order to best support our use case originally reported in http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-470 it would be necessary to add support for dynamically added shards at runtime.
> Also related: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-251 and http://www.opensubscriber.com/message/hibernate-dev@lists.jboss.org/9770383.html

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