[
https://issues.apache.org/jira/browse/CASSANDRA-1878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973090#action_12973090
]
Hudson commented on CASSANDRA-1878:
-----------------------------------
Integrated in Cassandra-0.6 #29 (See
[https://hudson.apache.org/hudson/job/Cassandra-0.6/29/])
Re-cache hotkeys post-compaction without hitting disk
patch by jbellis; reviewed by tjake for CASSANDRA-1878
> Minimize Key Cache Invalidation by Compaction
> ---------------------------------------------
>
> Key: CASSANDRA-1878
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1878
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Tyler Hobbs
> Assignee: Jonathan Ellis
> Fix For: 0.6.9, 0.7.0
>
> Attachments: 1878.txt, 1878_v2.txt
>
>
> Currently, compactions invalidate key cache entries that pointed to the
> SSTables that were compacted. This results in a sudden increase in the
> number of seeks necessary for reads immediately after compaction. When
> writing out a new SSTable after a compaction, it seems like it should be
> possible to store a list of keys that are currently cached but would be
> invalidated along with their new position in the new SSTable. Matt Dennis
> also seems to think this would be relatively easy to do.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
