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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7240) Object store in HDFS
Date Thu, 26 May 2016 18:06:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302604#comment-15302604
] 

Jitendra Nath Pandey commented on HDFS-7240:
--------------------------------------------

bq. Why an object store as part of HDFS?
It is one of the goals to have both hdfs and ozone being available in the same deployment.
That means same datanodes serve both ozone and hdfs data. Therefore, having ozone as a separate
subproject in hadoop is ok as long as they can share the storage layer. The datanode changes
would still be needed in hdfs.
   There is another proposal in HDFS-10419, that moves HDFS data into storage containers.
I think that effort will need a new datanode implementation, that shares storage container
layer with ozone. 

> Object store in HDFS
> --------------------
>
>                 Key: HDFS-7240
>                 URL: https://issues.apache.org/jira/browse/HDFS-7240
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>         Attachments: Ozone-architecture-v1.pdf, Ozonedesignupdate.pdf, ozone_user_v0.pdf
>
>
> This jira proposes to add object store capabilities into HDFS. 
> As part of the federation work (HDFS-1052) we separated block storage as a generic storage
layer. Using the Block Pool abstraction, new kinds of namespaces can be built on top of the
storage layer i.e. datanodes.
> In this jira I will explore building an object store using the datanode storage, but
independent of namespace metadata.
> I will soon update with a detailed design document.



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