[
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
Slightly updated doc on DDM:
* Clarified the separation of mechanism from DDM policy as per Colin's and my
comment on being able to create memory cached file anywhere in the HDFS
namespace.
* Explained how DDMs fit with materialized queries (julains DIMMQ).
* Updated references marked TBD
* Minor improvements to the RDD/Tachyon comparison.
Note this text was written prior to Ali and Li's comment and hence does
not address their concern. I am rereading the Tachyon paper and will be meeting
Li over the next couple of days and will update further as needed.
> 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,
> 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.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
