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From "Rohit Rai (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-7100) Regression in 2.0.x - Cql3 reader returns duplicate rows if the cluster column is reversed
Date Sun, 27 Apr 2014 18:17:15 GMT
Rohit Rai created CASSANDRA-7100:
------------------------------------

             Summary: Regression in 2.0.x - Cql3 reader returns duplicate rows if the cluster
column is reversed
                 Key: CASSANDRA-7100
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7100
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.2.6
            Reporter: Rohit Rai
            Assignee: Alex Liu
             Fix For: 1.2.9


To reproduce it,

cqlsh:test>  select * from wordfreq;

 title   | occurances | word
---------+------------+-------
 alex123 |          4 |  liu3
   alex1 |      23456 |  liu2
  alex10 |         10 | liu10
  alex12 |         34 |  liu3
    alex |     123456 |  liu1
    alex |       1000 |   liu


CREATE TABLE wordfreq ( title text, word text, occurances int, PRIMARY KEY (title,occurances))
WITH CLUSTERING ORDER by (occurances DESC);

The hadoop job returns 7 rows instead of 6 rows. 

I will post a patch soon.




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