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Posted to common-issues@hadoop.apache.org by "Clark Jefcoat (JIRA)" <ji...@apache.org> on 2010/02/08 19:06:27 UTC

[jira] Updated: (HADOOP-6546) BloomMapFile can return false negatives

     [ https://issues.apache.org/jira/browse/HADOOP-6546?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Clark Jefcoat updated HADOOP-6546:
----------------------------------

    Attachment: HADOOP-6546.patch

Simple tests to demonstrate the problem and a proposed solution are attached.

> BloomMapFile can return false negatives
> ---------------------------------------
>
>                 Key: HADOOP-6546
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6546
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.20.1
>            Reporter: Clark Jefcoat
>         Attachments: HADOOP-6546.patch
>
>
> BloomMapFile can return false negatives when using keys of varying sizes.  If the amount of data written by the write() method of your key class differs between instance of your key, your BloomMapFile may return false negatives.

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