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From "Keith Turner (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-1578) Connector constructor doesn't need to fail-fast (maybe?)
Date Thu, 18 Jul 2013 22:08:49 GMT


Keith Turner commented on ACCUMULO-1578:

bq. As a user, I would find it frustrating if I accidentally typoed my password and then proceeded
type out a longer command, only to have it them come back as a failure.

Are you referring to the shell when you say type out a command?
> Connector constructor doesn't need to fail-fast (maybe?)
> --------------------------------------------------------
>                 Key: ACCUMULO-1578
>                 URL:
>             Project: Accumulo
>          Issue Type: Task
>            Reporter: Christopher Tubbs
>            Assignee: Christopher Tubbs
>             Fix For: 1.6.0
>   Original Estimate: 0.25h
>  Remaining Estimate: 0.25h
> Currently, when one instantiates a Connector from an Instance, with one's username and
token, the Connector actually tries to reach out and authenticate those credentials, to provide
early failure.
> Because this has some overhead, we explicitly check for the condition that the user is
a system user (a tserver or the monitor, etc.), so that we don't fail early in these conditions
(because we don't expect the system to be poorly configured or running in a bad state, such
that it doesn't authenticate... and we don't care about causing an inconvenience to unauthorized
servers by failing late).
> After some thought, I'm not sure that we should continue to fail fast. I'm not sure that
it provides sufficient convenience for users to warrant the additional RPC calls. Besides,
there's no guarantee, especially with the new pluggable authentication introduced in 1.5.0,
that the credentials will still be valid later, even if the user were able to authenticate
> As such, I propose we drop this check, and rely on authentication failures later (when
work is actually initiated).

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