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From "Vahid Hashemian (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-5278) kafka-console-consumer: `--value-deserializer` is not working but `--property value.deserializer` does
Date Fri, 19 May 2017 15:38:04 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-5278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16017556#comment-16017556
] 

Vahid Hashemian commented on KAFKA-5278:
----------------------------------------

Looks like the issue reported here is a subset of [KAFKA-3982|https://issues.apache.org/jira/browse/KAFKA-3982].
Plus, the correct syntax for providing additional properties directly in the command line
is {{--consumer-propert}}, not {{--property}}.

> kafka-console-consumer: `--value-deserializer` is not working but `--property value.deserializer`
does
> ------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5278
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5278
>             Project: Kafka
>          Issue Type: Bug
>          Components: clients
>    Affects Versions: 0.10.2.1
>            Reporter: Yeva Byzek
>            Assignee: huxi
>            Priority: Minor
>
> kafka-console-consumer: {{--value-deserializer}} is not working but {{--property value.deserializer}}
is working
> 1. Does not work
> {noformat}
> $ kafka-console-consumer --bootstrap-server localhost:9092 --from-beginning --topic TEST1
 --value-deserializer org.apache.kafka.common.serialization.LongDeserializer
> [2017-05-18 13:09:41,745] ERROR Error processing message, terminating consumer process:
 (kafka.tools.ConsoleConsumer$)
> java.lang.ClassCastException: java.lang.Long cannot be cast to [B
> 	at kafka.consumer.NewShinyConsumer.receive(BaseConsumer.scala:100)
> 	at kafka.tools.ConsoleConsumer$.process(ConsoleConsumer.scala:120)
> 	at kafka.tools.ConsoleConsumer$.run(ConsoleConsumer.scala:75)
> 	at kafka.tools.ConsoleConsumer$.main(ConsoleConsumer.scala:50)
> 	at kafka.tools.ConsoleConsumer.main(ConsoleConsumer.scala)
> Processed a total of 0 messages
> {noformat}
> 2. Does work
> {noformat}
> $ kafka-console-consumer --bootstrap-server localhost:9092 --from-beginning --topic TEST1
 --property value.deserializer=org.apache.kafka.common.serialization.LongDeserializer
> 1000
> 2500
> 2000
> 5500
> 8000
> {noformat}
> Without either, the output is
> {noformat}
> $ kafka-console-consumer --bootstrap-server localhost:9092 --from-beginning --topic TEST1
> ?
> 	?
> ?
> |
> @
> {noformat}



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