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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11183) Timeline Consistent region replicas - Phase 2 design
Date Fri, 23 May 2014 18:58:02 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14007544#comment-14007544
] 

Mikhail Antonov commented on HBASE-11183:
-----------------------------------------

Sorry, copy-n-pasted from pdf, formatting evidently broke.

> Timeline Consistent region replicas - Phase 2 design
> ----------------------------------------------------
>
>                 Key: HBASE-11183
>                 URL: https://issues.apache.org/jira/browse/HBASE-11183
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>         Attachments: PhaseIIDesignforHBASE-10070.pdf
>
>
> Now that Phase 1 of parent issue HBASE-10070 is mostly done, it is time to think about
remaining items in Phase 2 as per the design doc https://issues.apache.org/jira/secure/attachment/12616659/HighAvailabilityDesignforreadsApachedoc.pdf
> Phase 2 will conclude the work and include at least the following major features: 
>  - Async WAL Replication 
>  - Replication Interface changes (HBASE-10504)
>  - Replication should guarantee seqId order (for region moves and RS failure)
>  - Flush / Compaction events should be written to WAL
>  - Flush / Memstore handling from secondary regions
>  - Region split / merge handling for replicated regions
> In this issue, we can discuss the proposed design, and keep it as like a parent jira
for Phase 2 work. We'll open subtasks agains the HBASE-10070 jira for individual patches.




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