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From Alain RODRIGUEZ <arodr...@gmail.com>
Subject Re: Deletes, null values
Date Fri, 26 Apr 2013 10:11:20 GMT
I copied the wrong query:

In CQL 2 it was:

delete '1228#16857','1228#16866','1228#16875' from myCF where key = 'all';

Sorry about the mistake.


2013/4/26 Alain RODRIGUEZ <arodrime@gmail.com>

> Of course:
>
> From CQL 2 (cqlsh -2):
>
> delete '183#16684','183#16714','183#16717' from myCF where key = 'all';
>
> And selecting this data as follow gives me the result above:
>
> select '1228#16857','1228#16866','1228#16875','1237#16544','1237#16553'
> from myCF where key = 'all';
>
> From thrift (phpCassa client):
>
> $pool = new ConnectionPool('myKeyspace', array('192.168.100.201'), 6, 0,
> 30000, 30000);
> $my_cf= new ColumnFamily($pool, 'myCF', true, true,
> ConsistencyLevel::QUORUM, ConsistencyLevel::QUORUM);
> $my_cf->remove('all', array('1228#16857','1228#16866','1228#16875'));
>
>
>
> 2013/4/25 Sorin Manolache <sorinm@gmail.com>
>
>> On 2013-04-25 11:48, Alain RODRIGUEZ wrote:
>>
>>> Hi, I tried to delete some columns using cql2 as well as thrift on
>>> C*1.2.2 and instead of being unreachable, deleted columns have a null
>>> value.
>>>
>>> I am using no value in this CF, the only information I use is the
>>> existence of the column. So when I select all the column for a given key
>>> I have the following returned:
>>>
>>>   1228#16857 | 1228#16866 | 1228#16875 | 1237#16544 | 1237#16553
>>> -------------------+----------**--------+------------------+--**
>>> -----------------+------------**------
>>>               null |              null |             null |
>>>          |
>>>
>>>
>>> This is quite annoying since my app thinks that I have 5 columns there
>>> when I should have 2 only.
>>>
>>> I first thought that this was a visible marker of tombstones but they
>>> didn't vanish after a major compaction.
>>>
>>> How can I get rid of these null/ghost columns and why does it happen ?
>>>
>>
>> I do something similar but I don't see null values. Could you please post
>> the code where you delete the columns?
>>
>> Sorin
>>
>>
>

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