[jira] Resolved: (SOLR-915) SolrCore;close() - scope to exploit parallelism among the number of closeHooks

["Ryan McKinley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ryan McKinley resolved SOLR-915.
--------------------------------

    Resolution: Fixed

check: rev 727122

thanks Kay

> SolrCore;close()  - scope to exploit parallelism among the number of closeHooks 
> --------------------------------------------------------------------------------
>
>                 Key: SOLR-915
>                 URL: https://issues.apache.org/jira/browse/SOLR-915
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>         Environment: Tomcat 6, JRE 6
>            Reporter: Kay Kay
>            Assignee: Ryan McKinley
>            Priority: Minor
>             Fix For: 1.4
>
>         Attachments: SOLR-915.patch, SOLR-915.patch, SOLR-915.patch, SOLR-915.patch
>
>   Original Estimate: 96h
>  Remaining Estimate: 96h
>
> In SolrCore: close() - all the way towards the end of the function - there seems to be a sequential list of close method invocation. 
>     if( closeHooks != null ) {
>        for( CloseHook hook : closeHooks ) {
>          hook.close( this );
>       }
>     }
> I believe this has scope to be parallelized ( actually the entire sequence of close operations , updateHandler,close() etc.) - by means of launching them in separate threads from an ExecutorService , for a much faster shutdown as the process definitely does not need to be sequential. 
> This becomes all the more important in the multi-core context when we might want to shutdown and restart a SolrCore altogether. 

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