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https://issues.apache.org/jira/browse/HDFS-1052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13069603#comment-13069603
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Suresh Srinivas commented on HDFS-1052:
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> For this lookup/searching of metadata, can we use Distributed Hashing? please
> let me know some thing regarding it.
Client goes directly to the namespace of interest. In order to ease this,
HADOOP-7257 add client side mount tables. This eliminates the need to
lookup/search on group of namenodes and facilitates client going to directly to
a namespace.
> HDFS scalability with multiple namenodes
> ----------------------------------------
>
> Key: HDFS-1052
> URL: https://issues.apache.org/jira/browse/HDFS-1052
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Fix For: 0.23.0
>
> Attachments: Block pool proposal.pdf, HDFS-1052.3.patch,
> HDFS-1052.4.patch, HDFS-1052.5.patch, HDFS-1052.6.patch, HDFS-1052.patch,
> Mulitple Namespaces5.pdf, high-level-design.pdf
>
>
> HDFS currently uses a single namenode that limits scalability of the cluster.
> This jira proposes an architecture to scale the nameservice horizontally
> using multiple namenodes.
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