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https://issues.apache.org/jira/browse/CASSANDRA-5514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13665696#comment-13665696
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Jonathan Ellis commented on CASSANDRA-5514:
-------------------------------------------
LGTM in principle. Made some tweaks in
https://github.com/jbellis/cassandra/commits/5514. Still a bit unclear about
DCT -- added a hack in the last commit to always return true, but do we need to
do anything on the collector side?
> Allow timestamp hints
> ---------------------
>
> Key: CASSANDRA-5514
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5514
> Project: Cassandra
> Issue Type: New Feature
> Components: API, Core
> Reporter: Jonathan Ellis
> Assignee: Marcus Eriksson
> Fix For: 2.0
>
> Attachments: 0001-CASSANDRA-5514-v1.patch,
> 0001-CASSANDRA-5514-v2.patch
>
>
> Slice queries can't optimize based on timestamp except for rare cases
> (CASSANDRA-4116). However, many common queries involve an implicit time
> component, where the application author knows that he is only interested in
> data more recent than X, or older than Y.
> We could use the per-sstable max and min timestamps we track to avoid
> touching cold data if we could pass a hint to Cassandra about the time range
> we care about.
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