[HDFS-12269] Better to return a Map rather than HashMap in getErasureCodingCodecs

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0-beta1
• Component/s: erasure-coding
• Hadoop Flags: Reviewed
• Assignee: Huafeng Wang
• Reporter: Huafeng Wang
• Created: 07/Aug/17 10:09
• Updated: 07/Oct/17 02:24
• Resolved: 17/Aug/17 04:21

Description

Currently the getErasureCodingCodecs function defined in ClientProtocal returns a Hashmap:

  HashMap<String, String> getErasureCodingCodecs() throws IOException;

It's better to return a Map.