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Posted to commits@cassandra.apache.org by "Rohit Rai (JIRA)" <ji...@apache.org> on 2014/04/26 06:41:15 UTC
[jira] [Commented] (CASSANDRA-5718) Cql3 reader returns duplicate
rows if the cluster column is reversed
[ https://issues.apache.org/jira/browse/CASSANDRA-5718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13981882#comment-13981882 ]
Rohit Rai commented on CASSANDRA-5718:
--------------------------------------
[~jbellis] [~alexliu68]
There is a regression in 2.0.x builds of Cassandra and the trunk.
The changes done for this issue were inadvertently overwritten in a merge from 1.2 to 2.0
https://git-wip-us.apache.org/repos/asf?p=cassandra.git;a=blobdiff;f=src/java/org/apache/cassandra/hadoop/cql3/CqlPagingRecordReader.java;h=d9b9a39cebe0ec50e5e80c6f8057d4cce0646b6a;hp=b6e793c7e46adf3694c71e365833960c650c8152;hb=3a4d6beb;hpb=8e7d7285cdeac4f2527c933280d595bbddd26935
Should I submit a patch against 2.0 and trunk?
> Cql3 reader returns duplicate rows if the cluster column is reversed
> --------------------------------------------------------------------
>
> Key: CASSANDRA-5718
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5718
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.2.6
> Reporter: Alex Liu
> Assignee: Alex Liu
> Fix For: 1.2.9
>
> Attachments: 5718-1.2-branch.txt, 5718-2-1.2-branch.txt, 5718-3-1.2-branch.txt
>
>
> 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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