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From "Alexei Scherbakov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-3448) Wrong count returned by count distinct and similar queries.
Date Thu, 07 Jul 2016 16:38:10 GMT
Alexei Scherbakov created IGNITE-3448:
-----------------------------------------

             Summary: Wrong count returned by count distinct and similar queries.
                 Key: IGNITE-3448
                 URL: https://issues.apache.org/jira/browse/IGNITE-3448
             Project: Ignite
          Issue Type: Bug
            Reporter: Alexei Scherbakov


Partitioned cache is deployed on 3 nodes.
The code below outputs incorrect counts: 
14
14

{code}
       IgniteCache<Integer, Value> cache = grid(0).cache(null);

        cache.put(0, new Value("v1"));
        cache.put(3, new Value("v1"));
        cache.put(5, new Value("v1"));
        cache.put(9, new Value("v1"));

        cache.put(1, new Value("v3"));
        cache.put(15, new Value("v3"));
        cache.put(8, new Value("v3"));

        cache.put(2, new Value("v5"));
        cache.put(12, new Value("v5"));

        cache.put(4, new Value("v2"));
        cache.put(6, new Value("v2"));

        cache.put(7, new Value("v6"));

        cache.put(10, new Value("v7"));

        cache.put(11, new Value("v8"));

        cache.put(13, new Value("v4"));
        cache.put(14, new Value("v4"));

        QueryCursor<List<?>> qry = cache.query(new SqlFieldsQuery("select count(distinct
str) from Value"));

        for (List<?> objects : qry)
            System.out.println(objects.get(0));

        qry = cache.query(new SqlFieldsQuery("select count(*) from (select 1 from Value group
by str)"));

        for (List<?> objects : qry)
            System.out.println(objects.get(0));
       
{code}




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