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  1. Kafka
  2. KAFKA-10332

MirrorMaker2 fails to detect topic if remote topic is created first

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.6.0
    • Fix Version/s: 2.7.0, 2.5.2, 2.6.1
    • Component/s: mirrormaker
    • Labels:
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      Description

      Setup:

      • 2 clusters: source and target
      • Mirroring data from source to target
      • create a topic called source.mytopic on the target cluster
      • create a topic called mytopic on the source cluster
        At this point, MM2 does not start mirroring the topic.

      This also happens if you delete and recreate a topic that is being mirrored.

      The issue is in refreshTopicPartitions() which basically does a diff between the 2 clusters.
      When creating the topic on the source cluster last, it makes the partition list of both clusters match, hence not triggering a reconfiguration

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              • Assignee:
                mimaison Mickael Maison
                Reporter:
                mimaison Mickael Maison
                Reviewer:
                Randall Hauch
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                • Created:
                  Updated:
                  Resolved: