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From "John Vines (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-263) Client scanner/batch writer creators should have a fail fast check
Date Wed, 02 May 2012 18:30:52 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266795#comment-13266795
] 

John Vines commented on ACCUMULO-263:
-------------------------------------

Wow... I butchered this description while typing it.

Fail fast check for security issues, i.e. read and write permissions. However, this will then
require to the client to be fully aware of the security mechanism used, which may not mesh
nicely with the changes to the authenticator in trunk. I'm thinking we may want to table this
as an unneeded feature.
                
> Client scanner/batch writer creators should have a fail fast check
> ------------------------------------------------------------------
>
>                 Key: ACCUMULO-263
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-263
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: client
>            Reporter: John Vines
>            Assignee: Eric Newton
>
> Currently connection.createScanner/createBatchWriter only throws TableotFoundException,
it does no checking for quick failures. There is an efficiency hit in doing a server hit.
We may want to consider keeping a zoocache on the client end for checking. It's not the most
secure, but the permissions are checked server side so any attempt to subvert the security
in the initial check will not change the final result.

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