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Posted to commits@cassandra.apache.org by "Branimir Lambov (Jira)" <ji...@apache.org> on 2023/05/02 08:46:00 UTC
[jira] [Commented] (CASSANDRA-18398) CEP-25: Trie-indexed SSTable format
[ https://issues.apache.org/jira/browse/CASSANDRA-18398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17718487#comment-17718487 ]
Branimir Lambov commented on CASSANDRA-18398:
---------------------------------------------
bq. This is more venting than constructive feedback, but there are certainly parts of this patch that would be simpler without early open in play. Are there any active proposals to remove it for 5.0?
At this point there is little hope to achieve what early open does without it.
bq. RE checksumming on the partition/row index files, would a reasonable path forward for now be to spin off a separate Jira where we look into at least verifying integrity on startup (and streaming?), sort of like what we do w/ DIGEST?
Let's make it a separate JIRA; this can be done post 5.0. If it is a startup check (which may have the side effect of warming up the cache for indexes), the CRCs can be in a different file. If not, they need to be stored with the page to avoid costly additional page fetches.
> CEP-25: Trie-indexed SSTable format
> -----------------------------------
>
> Key: CASSANDRA-18398
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18398
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/SSTable
> Reporter: Branimir Lambov
> Assignee: Branimir Lambov
> Priority: Normal
> Fix For: 5.x
>
> Time Spent: 27h 10m
> Remaining Estimate: 0h
>
> Implementation of Big Trie-Indexed (BTI) SSTable format, per [CEP-25|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-25%3A+Trie-indexed+SSTable+format].
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