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From "Raintung Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-3749) Default syncLevel cannot be configured by solrconfig.xml for updateLog(transaction log)
Date Thu, 23 Aug 2012 05:55:41 GMT

     [ https://issues.apache.org/jira/browse/SOLR-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Raintung Li updated SOLR-3749:
------------------------------

        Fix Version/s: 4.0-BETA
                       4.0
    Affects Version/s: 4.0
    
> Default syncLevel cannot be configured by solrconfig.xml for updateLog(transaction log)
> ---------------------------------------------------------------------------------------
>
>                 Key: SOLR-3749
>                 URL: https://issues.apache.org/jira/browse/SOLR-3749
>             Project: Solr
>          Issue Type: Improvement
>          Components: update
>    Affects Versions: 4.0-ALPHA, 4.0
>         Environment: Solr cloud
>            Reporter: Raintung Li
>              Labels: log, syncLevel,, transaction, updateLog
>             Fix For: 4.0-ALPHA, 4.0-BETA, 4.0
>
>         Attachments: configpatch, patch.txt
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> In solr 4.0 environment, transaction log had been defined in three level, none/flush/fsync.
The updateLog hard code the default sync level is SyncLevel.FLUSH.
> If user want to use the other levels, have to rewrite the RunUpdateProcess, to set the
level.
> At best, user can set it in the solrconfig.xml, that it is easy to control and use.
> BTW, transaction log is very important for solr cloud, at best, invoke the sync to make
sure kernel memory submit into the disk to avoid some corner case that maybe damage transaction
log.

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