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Posted to commits@cassandra.apache.org by "Maxim Muzafarov (Jira)" <ji...@apache.org> on 2026/07/11 16:18:00 UTC

[jira] [Created] (CASSANDRA-21509) Enforcing uniqueness of paramLabel across command options

Maxim Muzafarov created CASSANDRA-21509:
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             Summary: Enforcing uniqueness of paramLabel across command options
                 Key: CASSANDRA-21509
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-21509
             Project: Apache Cassandra
          Issue Type: Task
            Reporter: Maxim Muzafarov
            Assignee: Maxim Muzafarov


On trunk, paramLabel is display-only: duplicate labels cause no parsing or behavioral problem, only ambiguous help output which some time confuses a command usage.

The uniqueness rule such as "paramLabels must be unique within a command across options, aliases, and positionals is a new convention this ticket introduces, not an existing invariant being violated. Its purpose is forward-looking: CASSANDRA-19476 (CEP-38) turns these labels into wire keys in a flat. Enforcing the convention on trunk now means no new commands can introduce collisions.



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