Hi, I’m not sure, but it is possible the discrepancy you are seeing is related to this: https://issues.apache.org/jira/browse/KAFKA-1367
I’m pretty sure the CLI talks to Zookeeper directly, whereas likely the SimpleConsumer talks to the Brokers. > On Aug 5, 2015, at 13:13, d...@ariens.ca wrote: > > > > Using (0.8.2.1) kafka.javaapi.consumer.SimpleConsumer and examining a > partition's metadata I'm seeing conflicting information for replicas and > ISR compared to the CLI /opt/kafka/bin/kafka-topics.sh --describe for > the same topic/partition. The CLI command shows replicas are equal to > ISR, whereas the simple consumer usually shows only 2/3 ISR. > > Here's a gist [1] that I'm using for my testing. Note, it doesn't > actively determine the leader to fetch the metadata from, however when I > execute it against a seed broker list that only contains the leader of > the partition I'm interested in, the results are the same. This leads me > to expect that the metadata is the same regardless of which broker you > query (as opposed to consuming offsets which require you request from > only the leader). > > > > Links: > ------ > [1] https://gist.github.com/ariens/f9e5f70ac4a5a139eac0
