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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CASSANDRA-5377) MemoryMeter miscalculating memtable live ratio
Date Fri, 22 Mar 2013 23:19:18 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams reassigned CASSANDRA-5377:
-------------------------------------------

    Assignee: Jonathan Ellis
    
> MemoryMeter miscalculating memtable live ratio
> ----------------------------------------------
>
>                 Key: CASSANDRA-5377
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5377
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1.10
>            Reporter: Ahmed Bashir
>            Assignee: Jonathan Ellis
>            Priority: Minor
>
> I've noticed the following logs in our running cluster:
> WARN [MemoryMeter:1] 2013-03-17 23:15:55,876 Memtable.java (line 197) setting live ratio
to minimum of 1.0 instead of 0.6378445488771007
> It seems odd for the deep size calculation to be smaller than the aggregate sum of serialized
columns.  Perhaps it's because we're mutating on a bunch of existing columns, or perhaps there's
some miscalculation somewhere
> Our column families all have regular columns (no super columns, expiring columns, etc)

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