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From "Mickael Maison (Jira)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-10802) Spurious log message when starting consumers
Date Thu, 03 Dec 2020 10:06:00 GMT
Mickael Maison created KAFKA-10802:

             Summary: Spurious log message when starting consumers
                 Key: KAFKA-10802
                 URL: https://issues.apache.org/jira/browse/KAFKA-10802
             Project: Kafka
          Issue Type: Improvement
    Affects Versions: 2.6.0
            Reporter: Mickael Maison

Reported by Gary Russell in the [2.6.1 RC3 vote thread|https://lists.apache.org/thread.html/r13d2c687b2fafbe9907fceb3d4f3cc6d5b34f9f36a7fcc985c38b506%40%3Cdev.kafka.apache.org%3E]

I am seeing this on every consumer start:

2020-11-25 13:54:34.858  INFO 42250 --- [ntainer#0-0-C-1] o.a.k.c.c.internals.AbstractCoordinator
 : [Consumer clientId=consumer-ktest26int-1, groupId=ktest26int] Rebalance failed.

org.apache.kafka.common.errors.MemberIdRequiredException: The group member needs to have a
valid member id before actually entering a consumer group.

Due to this change [1].

I understand what a MemberIdRequiredException is, but the previous (2.6.0) log (with exception.getMessage())
didn't stand out like the new one does because it was all on one line.

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