[KAFKA-7927] Old command line tools should notify user when unsupported isolation-level parameter provided

• Type: Bug
• Status: Open
• Priority: Blocker
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Component/s: consumer, core, producer
• Assignee: Unassigned
• Reporter: Gabor Somogyi
• Created: 13/Feb/19 13:51
• Updated: 20/Feb/19 08:39

Description

When a kafka client produces ~30k events and at the end it aborts the transaction a consumer can read part of the aborted messages when "isolation.level" set to "READ_COMMITTED".

Kafka client version: 2.0.0
Kafka broker version: 1.0.0
Producer:

java -jar kafka-producer/target/kafka-producer-0.0.1-SNAPSHOT-jar-with-dependencies.jar gsomogyi-cdh5144-220cloudera2-1.gce.cloudera.com:9092 src-topic

See attached code.
Consumer:

kafka-console-consumer --zookeeper localhost:2181 --topic src-topic --from-beginning --isolation-level read_committed

Same behavior seen when re-implemented the consumer in scala.

The whole application can be found here: https://github.com/gaborgsomogyi/kafka-semantics-tester