Thanks Till,
The link the the thread is here:
http://mail-archives.apache.org/mod_mbox/flink-user/201702.mbox/%3ccagr9p8cekzvx3fxqi363o3tbd37nuppe7l_+c7+kx_z_nqy...@mail.gmail.com%3E

On Fri, Nov 8, 2019 at 5:18 AM Till Rohrmann <trohrm...@apache.org> wrote:

> Hi Harrison,
>
> which mailing list thread are you referring to exactly? I've pulled in
> Becket who might be able to tell you more about the Kafka connector.
>
> Cheers,
> Till
>
> On Thu, Nov 7, 2019 at 11:11 PM Harrison Xu <h...@quora.com> wrote:
>
>> I am using Flink 1.9.0 and KafkaConsumer010 (Kafka 0.10.1.1). Attempting
>> to retrieve the offset lag of Flink kafka consumers results in the below
>> error. I saw a separate thread about this in the mailing list in 2017 - is
>> this not fixed? Are there workarounds?
>>
>>
>> > $ /work/kafka_2.11-0.10.1.1/bin/kafka-consumer-groups.sh
>> > --bootstrap-server localhost:9092 --group test --describe
>> > Error while executing consumer group command Group test with protocol type
>> > '' is not a valid consumer group
>>
>>
>>
>>
>>

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