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https://issues.apache.org/jira/browse/KAFKA-3982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16035298#comment-16035298
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ASF GitHub Bot commented on KAFKA-3982:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/1655
> Issue with processing order of consumer properties in console consumer
> ----------------------------------------------------------------------
>
> Key: KAFKA-3982
> URL: https://issues.apache.org/jira/browse/KAFKA-3982
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Reporter: Vahid Hashemian
> Assignee: Vahid Hashemian
> Priority: Minor
> Fix For: 0.11.0.0
>
>
> With the recent introduction of {{consumer.property}} argument in console
> consumer, both new and old consumer could overwrite certain properties
> provided using this new argument.
> Specifically, the old consumer would overwrite the values provided for
> [{{auto.offset.reset}}|https://github.com/apache/kafka/blob/10bbffd75439e10fe9db6cf0aa48a7da7e386ef3/core/src/main/scala/kafka/tools/ConsoleConsumer.scala#L173]
> and
> [{{zookeeper.connect}}|https://github.com/apache/kafka/blob/10bbffd75439e10fe9db6cf0aa48a7da7e386ef3/core/src/main/scala/kafka/tools/ConsoleConsumer.scala#L174],
> and the new consumer would overwrite the values provided for
> [{{auto.offset.reset}}|https://github.com/apache/kafka/blob/10bbffd75439e10fe9db6cf0aa48a7da7e386ef3/core/src/main/scala/kafka/tools/ConsoleConsumer.scala#L196],
>
> [{{bootstrap.servers}}|https://github.com/apache/kafka/blob/10bbffd75439e10fe9db6cf0aa48a7da7e386ef3/core/src/main/scala/kafka/tools/ConsoleConsumer.scala#L197],
>
> [{{key.deserializer}}|https://github.com/apache/kafka/blob/10bbffd75439e10fe9db6cf0aa48a7da7e386ef3/core/src/main/scala/kafka/tools/ConsoleConsumer.scala#L198],
> and
> [{{key.deserializer}}|https://github.com/apache/kafka/blob/10bbffd75439e10fe9db6cf0aa48a7da7e386ef3/core/src/main/scala/kafka/tools/ConsoleConsumer.scala#L199].
> For example, running the old consumer as {{bin/kafka-console-consumer.sh
> --zookeeper localhost:2181 --topic foo --consumer-property
> auto.offset.reset=none}} the value that's eventually selected for
> {{auto.offset.reset}} will be {{largest}}, overwriting what the user provides
> in the command line.
> This seems to be because the properties provided via {{consumer.property}}
> argument are not considered when finalizing the configuration of the consumer.
> Some properties can now be provided in three different places (directly in
> the command line, via the {{consumer.property}} argument, and via the
> {{consumer.config}} argument, in the same order of precedence).
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