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From "Marcus Eriksson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6216) Level Compaction should persist last compacted key per level
Date Mon, 22 Aug 2016 06:31:21 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15430121#comment-15430121
] 

Marcus Eriksson commented on CASSANDRA-6216:
--------------------------------------------

This looks good to me, just one small comment

Instead of calculating it in LeveledManifest#getCompactionCandidates - I think we could override
AbstractCompactionStrategy#startup in LeveledCompactionStrategy - at this point we should
know all the sstables and can do the calculation

> Level Compaction should persist last compacted key per level
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-6216
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6216
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: sankalp kohli
>            Assignee: Dikang Gu
>            Priority: Minor
>              Labels: compaction, lcs
>         Attachments: JIRA-6216.diff
>
>
> Level compaction does not persist the last compacted key per level. This is important
for higher levels. 
> The sstables with higher token and in higher levels wont get a chance to compact as the
last compacted key will get reset after a restart.    



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