[HADOOP-12161] Add getStoragePolicy API to the FileSystem interface

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: fs
• Hadoop Flags: Reviewed
• Assignee: Brahma Reddy Battula
• Reporter: Arpit Agarwal
• Created: 30/Jun/15 22:26
• Updated: 10/Jan/17 15:42
• Resolved: 23/Jul/15 17:17

Description

HDFS-8345 added FileSystem#getAllStoragePolicies and FileSystem#setStoragePolicy. Jira to

1. Add a corresponding FileSystem#getStoragePolicy to query the storage policy for a given file/directory.
2. Add corresponding implementation for HDFS i.e. DistributedFileSystem#getStoragePolicy.
3. Update the FileSystem specification. This will require editing hadoop-common-project/hadoop-common/src/site/markdown/filesystem/filesystem.md.

Issue Links

• is related to: HBASE-14061 Support CF-level Storage Policy
• is related to: HDFS-8345 Storage policy APIs must be exposed via the FileSystem interface
• is required by: HADOOP-11981 Add storage policy APIs to filesystem docs
• relates to: HDFS-8815 DFS getStoragePolicy implementation using single RPC call