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Hadoop >> mail # dev >> Configuration and final parameters


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Jason Lowe 2013-07-02, 14:34
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Re: Configuration and final parameters
Given the lack of feedback, I'm guessing this is just a bug.  Filed
HADOOP-9725.

On 07/02/2013 09:34 AM, Jason Lowe wrote:
> Someone in our group recently discovered that Configuration parameters
> marked final can still be set().  The final designation only seems to
> be important when loading resources and is ignored when individual
> properties are modified.  The javadocs do call out loaded resources
> explicitly, but there's no indication as to why final properties are
> not checked during individual property modifications.  Bug or
> intentional?  Will something break if it calls set() and subsequently
> doesn't see the updated value because the final parameter silently
> ignored the new setting?
>
> The lack of checks in the set methods appear to be an oversight, but
> maybe I'm missing a use case?
>
> Jason
>