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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-2052) Recommend using viewfs:// or HA Namenode
Date Wed, 18 Dec 2013 04:28:07 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-2052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13851353#comment-13851353
] 

Josh Elser commented on ACCUMULO-2052:
--------------------------------------

Agreed -- In the HA Namenode case, you actually wouldn't have to do anything (Accumulo or
Hadoop). If you haven't configured Accumulo otherwise with instance.dfs.uri, you'll automatically
get the nameservice URI, which means you don't have to do anything if a namenode fails over.

> Recommend using viewfs:// or HA Namenode
> ----------------------------------------
>
>                 Key: ACCUMULO-2052
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-2052
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: master, tserver
>            Reporter: Keith Turner
>             Fix For: 1.6.0
>
>
> Given that recovering from a failed namenode in 1.6 could be tricky (see ACCUMULO-1832).
 I think we should recommend using viewfs:// or HA namenodes in documentation.    Using either
of these approaches, there would be no need to rewrite uris in Accumulo.   Only hadoop config
would need to be changed if the namenode is moved.   



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