[jira] [Created] (IMPALA-6428) Fix ALTER for tblproperty num_tablet_replicas

["Thomas Tauber-Marshall (JIRA)" <ji...@apache.org>]

Thomas Tauber-Marshall created IMPALA-6428:
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             Summary: Fix ALTER for tblproperty num_tablet_replicas
                 Key: IMPALA-6428
                 URL: https://issues.apache.org/jira/browse/IMPALA-6428
             Project: IMPALA
          Issue Type: Bug
          Components: Catalog
    Affects Versions: Impala 2.12.0
            Reporter: Thomas Tauber-Marshall


For Kudu tables created through Impala, we store a tblproperty called 'kudu.num_tablet_replicas', indicating the replication factor for the table.

If this value is set in a create table, it is passed to Kudu and actually applied to the table. However, altering this property is allowed but has no effect on the underlying table, which could be confusing.

We should either disallow altering the property, or we should pass the new value down to Kudu (if Kudu allows changing the replication factor after table creation)



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