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From "Brian Fu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8104) HBase consistency and availability after replication
Date Fri, 29 Mar 2013 06:47:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617147#comment-13617147

Brian Fu commented on HBASE-8104:

no. I want to implement a function that  automatically write the inconsistent data to the
target cluster after one cluster fail.
> HBase consistency and availability after replication
> ----------------------------------------------------
>                 Key: HBASE-8104
>                 URL: https://issues.apache.org/jira/browse/HBASE-8104
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.94.3
>            Reporter: Brian Fu
>            Priority: Critical
>   Original Estimate: 336h
>  Remaining Estimate: 336h
> HBase consistency and availability after replication
> Scene as follows:
> 1. There are two HBase clusters are the Master  clusters and Slave Clusters.  two clusters
replication function is open.
> 2. if master cluster have problems, so  all write and read request switching to the slave
> 3. After a period of time ,we need to switch back to the Master cluster, there will be
a part of the data is inconsistent, lead to  this part of the data is not available.
> This feature is particularly important for providing online services HBase cluster.
> So, I want through a write-back program to keep the data consistency, then to improve
HBase availability. 
> we will provide a patch for this function.

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