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Posted to jira@kafka.apache.org by "Marek (Jira)" <ji...@apache.org> on 2020/08/14 07:16:00 UTC

[jira] [Created] (KAFKA-10401) GroupMetadataManager ignores current_state_timestamp field for GROUP_METADATA_VALUE_SCHEMA_V3

Marek created KAFKA-10401:
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             Summary: GroupMetadataManager ignores current_state_timestamp field for GROUP_METADATA_VALUE_SCHEMA_V3
                 Key: KAFKA-10401
                 URL: https://issues.apache.org/jira/browse/KAFKA-10401
             Project: Kafka
          Issue Type: Bug
          Components: offset manager
    Affects Versions: 2.5.1, 2.6.0, 2.4.1, 2.2.2, 2.1.1
            Reporter: Marek


While reading group metadata information from ByteBuffer GroupMetadataManager reads current_state_timestamp only for group schema version 2. For all other versions this value is set to "None". 

Piece of code responsible for bug:

[https://github.com/apache/kafka/blob/2.6.0/core/src/main/scala/kafka/coordinator/group/GroupMetadataManager.scala#L1412]

Restarting kafka forces GroupMetadataManager manager to reload group metadata from file basically causing [KIP-211|[https://cwiki.apache.org/confluence/display/KAFKA/Kafka+Improvement+Proposals?src=breadcrumbs-parent]]  to be only applicable for schema version 2. 

 

 



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