[
https://issues.apache.org/jira/browse/ACCUMULO-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13879154#comment-13879154
]
Keith Turner commented on ACCUMULO-1832:
----------------------------------------
I was thinking about how user might use the new HA namenode w/ 1.6. and another
use case for this utility occurred to me. The following scenario seems like a
possibility.
# User sets up single namnode w/ address http://<dns address>:<port>
# User runs Accumulo 1.6.0 using this namenode.
# User replaces single namenode w/ HA namenode w/ address http://<nameservice
id>
# User replaces all instances of http://<dns address>:<port> in Accumulo
metadata with http://<nameservice id>
It would be nice if all users just started off w/ HA namenodes, but I suspect
the above may not be uncommon. If the user does not do step 4 and things just
happen to still work, then they may not find out they need to do it until a
namenode failure occurs.
> 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.
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
