[jira] [Commented] (CASSANDRA-5921) Don't return empty list when the L0 compaction candidates could cause overlap in L1

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-5921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747570#comment-13747570 ] 

Jonathan Ellis commented on CASSANDRA-5921:
-------------------------------------------

- You changed {{compactingL0}} to just {{compacting}} which would unfix 5907
- You'll also need to do the L0 difference before the union with L1 overlaps; otherwise the difference could remove L1 sstables that need to be included for correctness
- Time to address {{TODO try to find a set of L0 sstables that only overlaps with non-busy L1 sstables}} ?
                
> Don't return empty list when the L0 compaction candidates could cause overlap in L1
> -----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-5921
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5921
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>            Priority: Minor
>         Attachments: 0001-instead-of-doing-no-compaction-if-we-have-sstables-t.patch
>
>
> Followup to CASSANDRA-5907 - instead of returning empty list when the compaction candidates could cause overlap in L1, remove sstables that would cause the overlap from the candidates.

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