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From "Sanjay Radia (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5851) Support memory as a storage medium
Date Fri, 25 Apr 2014 21:07:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sanjay Radia updated HDFS-5851:
-------------------------------

    Attachment: SupportingMemoryStorageinHDFSPersistentandDiscardableMemory.pdf

Added comparison to Tachyon in the doc. The is also an implementation difference that I don't
cover (Tachyon I believe uses RamFs rather than a memory that is mapped to a HDFS file --
but need to verify that).

> Support memory as a storage medium
> ----------------------------------
>
>                 Key: HDFS-5851
>                 URL: https://issues.apache.org/jira/browse/HDFS-5851
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>    Affects Versions: 3.0.0
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: SupportingMemoryStorageinHDFSPersistentandDiscardableMemory.pdf,
SupportingMemoryStorageinHDFSPersistentandDiscardableMemory.pdf
>
>
> Memory can be used as a storage medium for smaller/transient files for fast write throughput.
> More information/design will be added later.



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