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Posted to hdfs-issues@hadoop.apache.org by "eric baldeschwieler (JIRA)" <ji...@apache.org> on 2014/04/17 01:46:18 UTC

[jira] [Commented] (HDFS-5851) Support memory as a storage medium

    [ https://issues.apache.org/jira/browse/HDFS-5851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13972103#comment-13972103 ] 

eric baldeschwieler commented on HDFS-5851:
-------------------------------------------

A very interesting design space!

How does this relate to Tachyon's design goals?
What is the target use case?  
What durability / replication guarantees are you providing?
What happens when RAM is exhausted?

Assuming low durability, what happens when a file or block is lost?

> 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
>
> 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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