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From "Sylvain Lebresne (JIRA)" <>
Subject [jira] [Assigned] (CASSANDRA-10762) select_distinct_with_deletions_test failing in mixed version cluster
Date Thu, 21 Jan 2016 09:44:39 GMT


Sylvain Lebresne reassigned CASSANDRA-10762:

    Assignee: Sylvain Lebresne

> select_distinct_with_deletions_test failing in mixed version cluster
> --------------------------------------------------------------------
>                 Key: CASSANDRA-10762
>                 URL:
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: CQL
>            Reporter: Philip Thompson
>            Assignee: Sylvain Lebresne
>             Fix For: 3.0.x
> The dtests {{upgrade_tests.cql_tests.TestCQLNodes3RF3.select_distinct_with_deletions_test}}
and {{upgrade_tests.cql_tests.TestCQLNodes2RF1.select_distinct_with_deletions_test}} are failing.

> While in a mixed node state, they do {{'SELECT DISTINCT k FROM t1'}} on this table
> {{CREATE TABLE t1 (k int PRIMARY KEY, c int, v int)}}
> More rows than expected are returned. Here is the sample output of one of those queries.
As you can see, there are duplicate values of k returned in a DISTINCT k query. Seems like
a bug when communicating between the 2.2 and 3.0 node.
> {code}
> [Row(k=5), Row(k=1), Row(k=1), Row(k=8), Row(k=8), Row(k=2), Row(k=2), Row(k=4), Row(k=4),
Row(k=7), Row(k=7), Row(k=6), Row(k=6), Row(k=9), Row(k=9), Row(k=3), Row(k=3)]
> {code}

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