You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@cassandra.apache.org by "Gary Dusbabek (JIRA)" <ji...@apache.org> on 2009/10/23 00:17:59 UTC
[jira] Updated: (CASSANDRA-350) optimize away unnecessary range
scans
[ https://issues.apache.org/jira/browse/CASSANDRA-350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary Dusbabek updated CASSANDRA-350:
------------------------------------
Attachment: cassandra-350.patch
> optimize away unnecessary range scans
> -------------------------------------
>
> Key: CASSANDRA-350
> URL: https://issues.apache.org/jira/browse/CASSANDRA-350
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Gary Dusbabek
> Fix For: 0.5
>
> Attachments: cassandra-350.patch
>
>
> Even when a the columns exist for a given key, they usually won't exist in all the sstable segments. So avoiding the scan when the column index shows we can, will be a win.
> This is what the todo in SSTableSliceIterator is about:
> // TODO push finishColumn down here too, so we can tell when we're done and optimize away the slice when the index + start/stop shows there's nothing to scan for
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.