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Posted to issues@hbase.apache.org by "Jonathan Hsieh (JIRA)" <ji...@apache.org> on 2012/12/11 08:57:23 UTC

[jira] [Commented] (HBASE-7321) Simple Flush Snapshot

    [ https://issues.apache.org/jira/browse/HBASE-7321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13528779#comment-13528779 ] 

Jonathan Hsieh commented on HBASE-7321:
---------------------------------------

This version consistently passes the jrub online testing/restoring attached to HBASE-7291.  

In manual testing on a single node, I've run PerformanceEvaluation with random write, while taking successfully taking multiple snapshots using this online snapshot implementation.
                
> Simple Flush Snapshot
> ---------------------
>
>                 Key: HBASE-7321
>                 URL: https://issues.apache.org/jira/browse/HBASE-7321
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Jonathan Hsieh
>
> This snapshot style just issues a region flush and then "snapshots" the region.  
> This is a simple implementation that gives the equivalent of copytable consistency.  While by most definitions of consistency if a client writes A and then write B to different region servers, only neither, only A, or both A+B writes should be present, this one allows the only B case.

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