Onur Karaman created KAFKA-2416:
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Summary: misleading kafka-console-consumer.sh --property option
Key: KAFKA-2416
URL: https://issues.apache.org/jira/browse/KAFKA-2416
Project: Kafka
Issue Type: Bug
Reporter: Onur Karaman
Priority: Minor
So I ran into this a long time ago and only just now remembered to document it:
kafka-console-consumer.sh takes a --property option, but this option is just an
argument for the message formatter. I've had ~10 users ask why --property
wasn't properly applying their consumer configuration key-value pairs. The tool
doesn't provide a description for --property, either. I know in the past, the
user was able to provide all consumer configurations from the command line
instead of from a file, so it's pretty understandable why the mistake would be
made.
Some solutions are:
1. just add a description to --property to the existing tool. It's not ideal
because the "property" name is still there, but it seems unlikely to break
existing users.
2. fix the existing kafka-console-consumer option name. This breaks existing
users so probably not okay.
3. make KAFKA-2015 actually a brand new console consumer with a more accurate
option name like --formatter-arg or --formatter-args. This won't break existing
users.
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