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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2011/02/08 21:37:57 UTC

[jira] Commented: (CASSANDRA-2142) Add "reduce memory usage because I tuned things poorly" feature

    [ https://issues.apache.org/jira/browse/CASSANDRA-2142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12992167#comment-12992167 ] 

Jonathan Ellis commented on CASSANDRA-2142:
-------------------------------------------

(cache-size adjustment is done only once; memtable flushing is done every time GCInspector hits that threshold.)

> Add "reduce memory usage because I tuned things poorly" feature
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-2142
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2142
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>              Labels: ponies
>             Fix For: 0.7.1
>
>         Attachments: 2142.txt
>
>
> Users frequently create too many columnfamilies, set the memtable thresholds too high (or adjust throughput while ignoring operations), and/or set caching thresholds too high.  Then their server OOMs and they tell their friends Cassandra sucks.

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