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Posted to commits@cassandra.apache.org by "Yuki Morishita (JIRA)" <ji...@apache.org> on 2013/11/15 23:29:21 UTC

[jira] [Commented] (CASSANDRA-5906) Avoid allocating over-large bloom filters

    [ https://issues.apache.org/jira/browse/CASSANDRA-5906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13824180#comment-13824180 ] 

Yuki Morishita commented on CASSANDRA-5906:
-------------------------------------------

Push this to be released on 2.1, after CASSANDRA-6356

> Avoid allocating over-large bloom filters
> -----------------------------------------
>
>                 Key: CASSANDRA-5906
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5906
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Yuki Morishita
>             Fix For: 2.1
>
>
> We conservatively estimate the number of partitions post-compaction to be the total number of partitions pre-compaction.  That is, we assume the worst-case scenario of no partition overlap at all.
> This can result in substantial memory wasted in sstables resulting from highly overlapping compactions.



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