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From "Dave Marion (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1832) Create utility for rewriting uris
Date Fri, 07 Feb 2014 19:11:20 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13894869#comment-13894869
] 

Dave Marion commented on ACCUMULO-1832:
---------------------------------------

I like the idea of using a prefix (see [1]) instead of full URL. If there were a mapping of
prefix to namenode address in the configuration, would that make rename operations simpler?
It's like viewfs to some degree, but I think it allows greater flexibility in the long run
as viewfs is limited to directories. In another release when we have a pluggable file placement
strategy, then we could add weights or priority to the different prefixes.


[1] https://issues.apache.org/jira/browse/ACCUMULO-118?focusedCommentId=13245562&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13245562

> Create utility for rewriting uris
> ---------------------------------
>
>                 Key: ACCUMULO-1832
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1832
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: master, tserver
>            Reporter: Keith Turner
>            Assignee: Eric Newton
>            Priority: Blocker
>             Fix For: 1.6.0
>
>
> When a users namenode dies and they restore it on another node Accumulo will not work
since it stores fully qualified uris internally.  Need to a provide a utility to rewrite these
URIs.
> The utility  could rewrite paths in zookeeper, bring root table online and rewrite paths,
bring metadata table online and rewrite, and then allow user tablets to come online.



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