Richard Joerger created KAFKA-12811:
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Summary: kafka-topics.sh should let the user know they cannot
adjust the replication factor for a topic using the --alter flag and not warn
about missing the --partition flag
Key: KAFKA-12811
URL: https://issues.apache.org/jira/browse/KAFKA-12811
Project: Kafka
Issue Type: Improvement
Components: admin
Reporter: Richard Joerger
Currently the kafka-topics.sh tool will return the following message when
trying to alter the replication factor for a topic:
{code:java}
$ ./bin/kafka-topics.sh --bootstrap-server
{code}
_host_
{code:java}
:9092 --alter --topic testTopic --replication-factor 4
21/05/18 13:23:54 INFO utils.Log4jControllerRegistration$: Registered
kafka:type=kafka.Log4jController MBean
Missing required argument "[partitions]"
{code}
But, what I believe it should do, since the appropriate way to adjust
replication factor is to use the kafka-reassign-partitions tool should be to
let the user know that this is not the appropriate way to adjust the
replication factor. It would look like this:
{code:java}
$ ./bin/kafka-topics.sh --bootstrap-server
{code}
_host_
{code:java}
:9092 --alter --topic testTopic --replication-factor 4
Option "[replication-factor]" can't be used with option "[alter]"{code}
Very minor improvement but should help alleviate what seems a little
unintuitive to some.
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