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From "Karthik Ranganathan (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4655) Document architecture of backups
Date Thu, 08 Dec 2011 19:02:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13165436#comment-13165436
] 

Karthik Ranganathan commented on HBASE-4655:
--------------------------------------------

@Doug:

<< list all the regions, for each region, ask the RS hosting it for a list of HFiles
>>

There is already an API to get a list of regions and the regionservers hosting them. And we
added a new API to the RS to list the HFiles for the regions it hosts.

<< The strategy is great, but it will generate a flurry of (warranted) questions on
how the average person does it. >>

True - but this task is only to make sure the document is easy to read and understand by an
average user. We can definitely add more details if needed, but that would risk confusing
people. I will definitely incorporate the other suggestions (confusing names, etc). The rest
of the tasks deal with giving a way for the average users to do backups by running/cron-ing
a command and not have to deal with the internals of how it works.
                
> Document architecture of backups
> --------------------------------
>
>                 Key: HBASE-4655
>                 URL: https://issues.apache.org/jira/browse/HBASE-4655
>             Project: HBase
>          Issue Type: Sub-task
>          Components: documentation, regionserver
>            Reporter: Karthik Ranganathan
>            Assignee: Karthik Ranganathan
>         Attachments: HBase Backups Architecture.docx
>
>
> Basic idea behind the backup architecture for HBase

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