[ 
https://issues.apache.org/jira/browse/CASSANDRA-7056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14054206#comment-14054206
 ] 

Jonathan Ellis commented on CASSANDRA-7056:
-------------------------------------------

Because without read support RAMP doesn't actually give you anything more than 
logged batches.  If I update tables X and Y in the same RAMP batch, then I do 
concurrent queries against X and Y, I have no isolation guarantees because the 
coordinator doesn't know to check both places. 

But, I think we can add read support pretty easily.  "Just" extend BATCH syntax 
to allow SELECT.  JDBC has had the concept of multiple resultsets for ages.

> Add RAMP transactions
> ---------------------
>
>                 Key: CASSANDRA-7056
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7056
>             Project: Cassandra
>          Issue Type: Wish
>          Components: Core
>            Reporter: Tupshin Harper
>            Priority: Minor
>
> We should take a look at 
> [RAMP|http://www.bailis.org/blog/scalable-atomic-visibility-with-ramp-transactions/]
>  transactions, and figure out if they can be used to provide more efficient 
> LWT (or LWT-like) operations.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Reply via email to