Robert Metzger created FLINK-3294:
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Summary: KafkaConsumer (0.8) commit offsets using
SimpleConsumer.commitOffsets()
Key: FLINK-3294
URL: https://issues.apache.org/jira/browse/FLINK-3294
Project: Flink
Issue Type: Bug
Components: Kafka Connector
Reporter: Robert Metzger
Currently, the 0.8 consumer for Kafka is committing the offsets manually into
Zookeeper so that users can track the lag using external tools.
The 0.8 consumer has a pluggable design, and this component is easily pluggable.
Since OffsetCommitRequest version=1 (supported in 0.8.2 or later), users can
choose between two offset commit modes:
a) Let the broker commit into ZK (this is what we are doing from the consumer
b) Let the broker commit the offset into a special topic.
By adding a different "OffsetHandler" backend, users can commit offsets from
the brokers (reducing the total number of ZK connections) or into the broker's
offset topic.
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