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Posted to hdfs-dev@hadoop.apache.org by "Rodrigo Schmidt (JIRA)" <ji...@apache.org> on 2010/02/14 05:44:28 UTC

[jira] Resolved: (HDFS-684) Use HAR filesystem to merge parity files

     [ https://issues.apache.org/jira/browse/HDFS-684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rodrigo Schmidt resolved HDFS-684.
----------------------------------

    Resolution: Duplicate

> Use HAR filesystem to merge parity files 
> -----------------------------------------
>
>                 Key: HDFS-684
>                 URL: https://issues.apache.org/jira/browse/HDFS-684
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: contrib/raid
>            Reporter: dhruba borthakur
>            Assignee: Rodrigo Schmidt
>         Attachments: HDFS-684.0.patch, HDFS-684.1.patch
>
>
> The HDFS raid implementation (HDFS-503) creates a parity file for every file that is RAIDed. This puts additional burden on the memory requirements of the namenode. It will be  nice if the parity files are combined together using the HadoopArchive (har) format. 

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