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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2013/09/10 23:29:52 UTC

[jira] [Created] (CASSANDRA-6001) Add a Tracing line for index/seq scan queries

Jonathan Ellis created CASSANDRA-6001:
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             Summary: Add a Tracing line for index/seq scan queries
                 Key: CASSANDRA-6001
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6001
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Jonathan Ellis
            Assignee: Lyuben Todorov
             Fix For: 2.0.1, 1.2.10


Tracing should show the user why a specific index was selected.  Something like

{noformat}
Index mean cardinality is {users_by_lastname: 100, users_by_state: 2000, users_by_birthdate: 1000}.  Scanning with users_by_lastname.
{noformat}

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