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Posted to notifications@accumulo.apache.org by "Eric Newton (JIRA)" <ji...@apache.org> on 2012/12/19 21:27:13 UTC

[jira] [Resolved] (ACCUMULO-367) distribute the master function via iterators, including consistency checks

     [ https://issues.apache.org/jira/browse/ACCUMULO-367?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Newton resolved ACCUMULO-367.
----------------------------------

    Resolution: Won't Fix

We can't do a consistency check in the tserver iterator because it can get torn down between rows.
                
> distribute the master function via iterators, including consistency checks
> --------------------------------------------------------------------------
>
>                 Key: ACCUMULO-367
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-367
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: master, tserver
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>             Fix For: 1.5.0
>
>
> ACCUMULO-315 and ACCUMULO-366 are a result of inconsistent reads of the metadata table.  If we moved more of the !METADATA scan work to the tablet servers, and had them verify the consistency as they read, the main loop of the master would not have to manage consistency with secondary scans.  We could even restructure the main loop to execute in a distributed fashion on the tablet servers.

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