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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-4663) MR based copier for copying HFiles
Date Sat, 11 Apr 2015 01:32:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell resolved HBASE-4663.
-----------------------------------
    Resolution: Won't Fix
      Assignee:     (was: Karthik Ranganathan)

> MR based copier for copying HFiles
> ----------------------------------
>
>                 Key: HBASE-4663
>                 URL: https://issues.apache.org/jira/browse/HBASE-4663
>             Project: HBase
>          Issue Type: Sub-task
>          Components: documentation, regionserver
>            Reporter: Karthik Ranganathan
>
> 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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