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From "Erick Erickson (JIRA)" <>
Subject [jira] [Commented] (SOLR-1028) Automatic core loading unloading for multicore
Date Tue, 30 Oct 2012 23:58:12 GMT


Erick Erickson commented on SOLR-1028:


Thanks for pointing me in the right direction here. How I made that test pass kinda sucked....

as per our chat, this apparently is a Java7 thing, which is why I can't seem to reproduce.

Anyway, checked in a fix r: 1403936 that I'll back-port along with this issue.

> Automatic core loading unloading for multicore
> ----------------------------------------------
>                 Key: SOLR-1028
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: multicore
>    Affects Versions: 4.0, 5.0
>            Reporter: Noble Paul
>            Assignee: Erick Erickson
>             Fix For: 4.1, 5.0
>         Attachments: SOLR-1028.patch, SOLR-1028.patch
> usecase: I have many small cores (say one per user) on a single Solr box . All the cores
are not be always needed . But when I need it I should be able to directly issue a search
request and the core must be STARTED automatically and the request must be served.
> This also requires that I must have an upper limit on the no:of cores that should be
loaded at any given point in time. If the limit is crossed the CoreContainer must unload a
core (preferably the least recently used core)  
> There must be a choice of specifying some cores as fixed. These cores must never be unloaded

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