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From "Kevin Weil (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1051) Umbrella Jira for Scaling the HDFS Name Service
Date Sun, 21 Mar 2010 15:49:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12847938#action_12847938
] 

Kevin Weil commented on HDFS-1051:
----------------------------------

I agree with Ryan.  There are probably not more than a handful of Hadoop clusters in the world
getting close to maximizing NN memory (and machines with 144 GB memory or more aren't too
hard to find these days).  Twitter's biggest challenge with bringing Hadoop closer to the
runtime path is its lack of HA guarantees.

> Umbrella Jira for Scaling the HDFS Name Service
> -----------------------------------------------
>
>                 Key: HDFS-1051
>                 URL: https://issues.apache.org/jira/browse/HDFS-1051
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 0.22.0
>            Reporter: Sanjay Radia
>            Assignee: Sanjay Radia
>
> The HDFS Name service currently uses a single Namenode which limits its scalability.
This is a master jira to track sub-jiras to address this problem.

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