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https://issues.apache.org/jira/browse/KAFKA-181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423292#comment-13423292
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Jun Rao commented on KAFKA-181:
-------------------------------
That sounds like a good idea. However, how do we know the config initialization
has finished so that we can report unused properties?
> Log errors for unrecognized config options
> ------------------------------------------
>
> Key: KAFKA-181
> URL: https://issues.apache.org/jira/browse/KAFKA-181
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Reporter: Joel Koshy
> Fix For: 0.8
>
>
> Currently, unrecognized config options are silently ignored. Notably, if a
> config has a typo or if a deprecated config is used, then there is no warning
> issued and defaults are assumed. One can argue that the broker or a consumer
> or a producer with an unrecognized config option should not even be allowed
> to start up especially if defaults are silently assumed, but it would be good
> to at least log an error.
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