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Posted to commits@cassandra.apache.org by "Aleksei Zotov (Jira)" <ji...@apache.org> on 2021/07/09 23:19:00 UTC
[jira] [Commented] (CASSANDRA-16782) Improve the way we pick
sstables for STCS-in-L0 and in TWCS 'current' window
[ https://issues.apache.org/jira/browse/CASSANDRA-16782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17378350#comment-17378350 ]
Aleksei Zotov commented on CASSANDRA-16782:
-------------------------------------------
Hi [~marcuse]
I checked the code and put a few comments to [https://github.com/krummas/cassandra/commit/5736260cc0095b64101ba05d5d7f2cdd9bd7aff9]. Please, let me know your thoughts. I'm apologizing in advance if some comments make no sense to you :)
PS:
I'm trying to follow Benjamin's call seeking for reviewers. Definitely a non-committer review does not let it be merged, but I hope it is still useful.
> Improve the way we pick sstables for STCS-in-L0 and in TWCS 'current' window
> ----------------------------------------------------------------------------
>
> Key: CASSANDRA-16782
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16782
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/Compaction/LCS, Local/Compaction/TWCS
> Reporter: Marcus Eriksson
> Assignee: Marcus Eriksson
> Priority: Normal
> Fix For: 4.x
>
>
> The goal when being behind in L0 should always be to get the number of sstables down to a reasonable level as soon as possible. Currently it is common that we run compactions on the large sstables but leave thousands of tiny sstables behind.
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