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https://issues.apache.org/jira/browse/HDFS-5851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887408#comment-13887408
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Colin Patrick McCabe commented on HDFS-5851:
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The HDFS-4949 work was centered around caching small, often-used files that
were already stored durably to disk. If we supported a "temporary /
non-durable" storage tier, there would be some overlap with internal
implementation, but probably not much with interface. We should probably have
a conference call about this at some point.
> 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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