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Posted to issues-all@impala.apache.org by "Abhishek Rawat (Jira)" <ji...@apache.org> on 2023/04/13 02:05:00 UTC

[jira] [Created] (IMPALA-12060) statestore should only allow a single catalog instance to be part of cluster

Abhishek Rawat created IMPALA-12060:
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             Summary: statestore should only allow a single catalog instance to be part of cluster
                 Key: IMPALA-12060
                 URL: https://issues.apache.org/jira/browse/IMPALA-12060
             Project: IMPALA
          Issue Type: Bug
            Reporter: Abhishek Rawat
            Assignee: Abhishek Rawat


Today Impala doesn't support multiple catalogd instances to be part of the cluster. When using external Active Passive HA mechanisms like leader election, it may be possible for multiple catalog replicas to be part of the cluster, in some cases. This is mainly because catalogds have no idea that there are other catalogd instances. One way to address this issue could be for statestore to always ensure that there could only be a single instance of catalogd in the cluster. 



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