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From "Ryan McGuire (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (CASSANDRA-10762) select_distinct_with_deletions_test failing in mixed version cluster
Date Fri, 05 Feb 2016 20:25:40 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ryan McGuire reopened CASSANDRA-10762:
--------------------------------------

> select_distinct_with_deletions_test failing in mixed version cluster
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-10762
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10762
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: CQL
>            Reporter: Philip Thompson
>            Assignee: Sylvain Lebresne
>             Fix For: 3.0.3, 3.3
>
>
> 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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