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From "Jesse Yates (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6180) [brainstorm] Timestamp based snapshots in HBase 0.96
Date Mon, 18 Jun 2012 20:15:43 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13396211#comment-13396211
] 

Jesse Yates commented on HBASE-6180:
------------------------------------

Looking at the documentation from Amazon's hosted HBase solution (http://docs.amazonwebservices.com/ElasticMapReduce/latest/DeveloperGuide/emr-hbase-backup-restore.html),
they provide the option to do either a --consistent view (with synchronization across all
the nodes) or a globally inconsistent view (but per-node consistency).  I think keeping the
"current" full consistency as an option is a 'nice to have', but making the timestamp based
backup - fuzzy consistency - the default. 
                
> [brainstorm] Timestamp based snapshots in HBase 0.96
> ----------------------------------------------------
>
>                 Key: HBASE-6180
>                 URL: https://issues.apache.org/jira/browse/HBASE-6180
>             Project: HBase
>          Issue Type: Brainstorming
>            Reporter: Jesse Yates
>             Fix For: 0.96.0
>
>
> Discussion ticket around doing timestamp based snapshots in HBase as an extension/follow-on
work for HBASE-6055. The implementation in HBASE-6055 (as originally defined) is not sufficient
for real-time clusters because it requires downtime to take the snapshot. 
> Time-stamp based snapshots should not require downtime at the cost of achieving global
consistency. 

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