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Posted to dev@chukwa.apache.org by "Ari Rabkin (JIRA)" <ji...@apache.org> on 2009/07/13 22:41:14 UTC

[jira] Reopened: (CHUKWA-338) duplicate suppression in archiver

     [ https://issues.apache.org/jira/browse/CHUKWA-338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ari Rabkin reopened CHUKWA-338:
-------------------------------


As per Jerome's observation, this doesn't catch all duplicates.

Proposed fix: Change sort keys, ignore time partition for purposes of assigning chunks to a reducer. And be more aggressive in using content to resolve dups.

> duplicate suppression in archiver
> ---------------------------------
>
>                 Key: CHUKWA-338
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-338
>             Project: Hadoop Chukwa
>          Issue Type: New Feature
>          Components: Data Processors
>            Reporter: Ari Rabkin
>            Assignee: Ari Rabkin
>             Fix For: 0.3.0
>
>         Attachments: archiveDupSuppress.patch
>
>
> Right now, Archiver uses an identity reducer.
> It should be straightforward to write a custom reducer that does duplicate detection and suppression if we get multiple chunks with the same key.

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