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From "Hiller, Dean" <Dean.Hil...@nrel.gov>
Subject Re: How to do a CAS UPDATE on single column CF?
Date Mon, 01 Jul 2013 18:19:46 GMT
What does CAS stand for? And is that the row locking feature like hbase's
setAndReadWinner that you give the previous val and next val and your next
val is returned if you won otherwise the current result is returned and
you know some other node won?

Thanks,
Dean

On 7/1/13 12:09 PM, "Blair Zajac" <blair@orcaware.com> wrote:

>Thanks!
>
>On 7/1/13 1:41 AM, Sylvain Lebresne wrote:
>> You're right, there is currently no way to do this since 1) insert
>>can't have a
>> IF currently and 2) update can't update such table.
>>
>> We'll fix that: https://issues.apache.org/jira/browse/CASSANDRA-5715
>>
>> --
>> Sylvain
>>
>>
>> On Sat, Jun 29, 2013 at 9:51 PM, Blair Zajac <blair@orcaware.com
>> <mailto:blair@orcaware.com>> wrote:
>>
>>     On 6/24/13 8:23 PM, Blair Zajac wrote:
>>
>>         How does one do an atomic update in a column family with a
>>single column?
>>
>>         I have a this CF
>>
>>         CREATE TABLE schema_migrations (
>>         version TEXT PRIMARY KEY,
>>         ) WITH COMPACTION = {'class': 'LeveledCompactionStrategy'};
>>
>>
>>     Anyone?  Should I raise this on the developer mailing list or open
>>a ticket?
>>
>>     Blair


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