[jira] [Updated] (HBASE-5509) MR based copier for copying HFiles (trunk version)

["Lars Hofhansl (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-5509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl updated HBASE-5509:
---------------------------------

    Fix Version/s:     (was: 0.94.1)
                       (was: 0.96.0)

I am not happy with this. I think other features (like hardlinks) are missing to make this scheme viable.
Unscheduling.
                
> MR based copier for copying HFiles (trunk version)
> --------------------------------------------------
>
>                 Key: HBASE-5509
>                 URL: https://issues.apache.org/jira/browse/HBASE-5509
>             Project: HBase
>          Issue Type: Sub-task
>          Components: documentation, regionserver
>            Reporter: Karthik Ranganathan
>            Assignee: Lars Hofhansl
>         Attachments: 5509-v2.txt, 5509.txt
>
>
> This copier is a modification of the distcp tool in HDFS. It does the following:
> 1. List out all the regions in the HBase cluster for the required table
> 2. Write the above out to a file
> 3. Each mapper 
>    3.1 lists all the HFiles for a given region by querying the regionserver
>    3.2 copies all the HFiles
>    3.3 outputs success if the copy succeeded, failure otherwise. Failed regions are retried in another loop
> 4. Mappers are placed on nodes which have maximum locality for a given region to speed up copying

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