Andrew Jorgensen created KAFKA-1816:
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Summary: Topic configs reset after partition increase
Key: KAFKA-1816
URL: https://issues.apache.org/jira/browse/KAFKA-1816
Project: Kafka
Issue Type: Bug
Affects Versions: 0.8.1.1
Reporter: Andrew Jorgensen
Priority: Minor
If you alter a topic to increase the number of partitions then the
configuration erases the existing configs for that topic. This can be
reproduces by doing the following:
{code:none}
$ bin/kafka-topics.sh --create --zookeeper localhost --topic test_topic
--partitions 5 --config retention.ms=3600
$ bin/kafka-topics.sh --describe --zookeeper localhost --topic test_topic
> Topic:test_topic PartitionCount:5 ReplicationFactor:1
> Configs:retention.ms=3600
$ bin/kafka-topics.sh --alter --zookeeper localhost --topic test_topic
--partitions 10
> Topic:test_topic PartitionCount:10 ReplicationFactor:1
> Configs:
{code}
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