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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4877) Range queries return fewer result after a lot of delete
Date Wed, 21 Nov 2012 12:07:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13501900#comment-13501900
] 

Jonathan Ellis commented on CASSANDRA-4877:
-------------------------------------------

+1
                
> Range queries return fewer result after a lot of delete
> -------------------------------------------------------
>
>                 Key: CASSANDRA-4877
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4877
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.2.0 beta 1
>            Reporter: julien campan
>            Assignee: Sylvain Lebresne
>             Fix For: 1.2.0 rc1
>
>         Attachments: 0001-4877.patch, 0002-Rename-maxIsColumns-to-countCQL3Rows.patch
>
>
> Hi, I'm testing on the trunk version
> I'm using : [cqlsh 2.3.0 | Cassandra 1.2.0-beta1-SNAPSHOT | CQL spec 3.0.0 | Thrift protocol
19.35.0]
> My use case is :
> I create a table
> CREATE TABLE premier (
> id int PRIMARY KEY,
> value int
> ) WITH
> comment='' AND
> caching='KEYS_ONLY' AND
> read_repair_chance=0.100000 AND
> dclocal_read_repair_chance=0.000000 AND
> gc_grace_seconds=864000 AND
> replicate_on_write='true' AND
> compression={'sstable_compression': 'SnappyCompressor'};
> 1) I insert 10 000 000 rows (they are like id = 1 and value =1)
> 2) I delete 2 000 000 rows (i use random method to choose the key value)
> 3) I do select * from premier ; and my result is 7944 instead of 10 000.
> 4) if if do select * from premier limit 20000 ; my result is 15839 .
> So after a lot of delete, the range operator is not working.

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