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From "Taiyuan Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10958) Range query using secondary index returns weird results
Date Thu, 31 Dec 2015 04:21:49 GMT
Taiyuan Zhang created CASSANDRA-10958:
-----------------------------------------

             Summary: Range query using secondary index returns weird results
                 Key: CASSANDRA-10958
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10958
             Project: Cassandra
          Issue Type: Bug
            Reporter: Taiyuan Zhang
            Priority: Minor


I'm playing with Cassandra 3. I added a secondary index on a column of integer, then I want
to do a range query. First it threw an error:

    InvalidRequest: code=2200 [Invalid query] message="No supported secondary index found
for the non primary key columns restrictions"

So I added 'Allow Filtering'

    cqlsh:mykeyspace> SELECT * FROM test ;

    id | id2 | age | extra
    ----+-----+-----+-------
      1 |   1 |   1 |     1
      2 |   2 |   2 |     2

    (2 rows)
    cqlsh:mykeyspace > CREATE INDEX test_age on test (extra) ;
    cqlsh:mykeyspace > select * FROM test WHERE extra < 2 ALLOW FILTERING ;

     id | id2  | age | extra
    ----+------+-----+-------
      1 |    1 |   1 |     1
      2 | null |   2 |  null

    (2 rows)

My schema is:

    CREATE TABLE mykeyspace.test (
    id int,
    id2 int,
    age int static,
    extra int,
    PRIMARY KEY (id, id2)
    ) 

It certainly looks like a BUG to me, even though it has a chance to be something by-design.




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