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Posted to hdfs-issues@hadoop.apache.org by "Ayush Saxena (JIRA)" <ji...@apache.org> on 2019/01/31 18:14:00 UTC
[jira] [Updated] (HDFS-13209) DistributedFileSystem.create should
allow an option to provide StoragePolicy
[ https://issues.apache.org/jira/browse/HDFS-13209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ayush Saxena updated HDFS-13209:
--------------------------------
Attachment: HDFS-13209-01.patch
> DistributedFileSystem.create should allow an option to provide StoragePolicy
> ----------------------------------------------------------------------------
>
> Key: HDFS-13209
> URL: https://issues.apache.org/jira/browse/HDFS-13209
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: hdfs
> Affects Versions: 3.0.0
> Reporter: Jean-Marc Spaggiari
> Assignee: Ayush Saxena
> Priority: Major
> Attachments: HDFS-13209-01.patch
>
>
> DistributedFileSystem.create allows to get a FSDataOutputStream. The stored file and related blocks will used the directory based StoragePolicy.
>
> However, sometime, we might need to keep all files in the same directory (consistency constraint) but might want some of them on SSD (small, in my case) until they are processed and merger/removed. Then they will go on the default policy.
>
> When creating a file, it will be useful to have an option to specify a different StoragePolicy...
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