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Posted to dev@kafka.apache.org by "Tommy Becker (JIRA)" <ji...@apache.org> on 2017/05/16 14:12:04 UTC

[jira] [Created] (KAFKA-5256) Non-checkpointed state stores should be deleted before restore

Tommy Becker created KAFKA-5256:
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             Summary: Non-checkpointed state stores should be deleted before restore
                 Key: KAFKA-5256
                 URL: https://issues.apache.org/jira/browse/KAFKA-5256
             Project: Kafka
          Issue Type: Bug
          Components: streams
    Affects Versions: 0.10.2.1
            Reporter: Tommy Becker


Currently, Kafka Streams will re-use an existing state store even if there is no checkpoint for it. This seems both inefficient (because duplicate inserts can be made on restore) and incorrect (records which have been deleted from the backing topic may still exist in the store). Since the contents of a store with no checkpoint are unknown, the best way to proceed would be to delete the store and recreate before restoring.



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