[HDFS-12308] Erasure Coding: Provide DistributedFileSystem & DFSClient API to return the effective EC policy on a directory or file, including the replication policy

• Type: Improvement
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Component/s: erasure-coding
• Labels: hdfs-ec-3.0-nice-to-have
• Target Version/s: 3.5.0
• Assignee: chencan
• Reporter: Sammi Chen
• Created: 16/Aug/17 05:24
• Updated: 04/Jan/24 07:18

Description

Provide DistributedFileSystem & DFSClient API to return the effective EC policy on a directory or file, including the replication policy. Policy name will like getNominalErasureCodingPolicy(PATH) and getAllNominalErasureCodingPolicies.

Issue Links

• is related to: HDFS-11082 Provide replicated EC policy to replicate files
• relates to: HDFS-12896 when set replicate EC policy for a directory or file，it's EC policy cannot be querying by getPolicy command.