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From "Marcus Eriksson (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-8525) Bloom Filter truePositive counter not updated on key cache hit
Date Mon, 22 Dec 2014 08:01:13 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-8525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marcus Eriksson updated CASSANDRA-8525:
---------------------------------------
    Attachment: 0001-inc-truepositive-for-keycache-hits.patch

> Bloom Filter truePositive counter not updated on key cache hit
> --------------------------------------------------------------
>
>                 Key: CASSANDRA-8525
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8525
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Tyler Hobbs
>            Assignee: Marcus Eriksson
>             Fix For: 2.0.12, 2.1.3
>
>         Attachments: 0001-inc-truepositive-for-keycache-hits.patch
>
>
> In {{SSTableReader.getPosition()}}, we're not incrementing the bloom filter truePositive
count when we get a key cache hit.  This can lead to misleading FP ratios in metrics.



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