Huafeng Wang created HDFS-12269:
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             Summary: Better to return a Map rather than HashMap in 
getErasureCodingCodecs
                 Key: HDFS-12269
                 URL: https://issues.apache.org/jira/browse/HDFS-12269
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: erasure-coding
            Reporter: Huafeng Wang
            Assignee: Huafeng Wang
            Priority: Minor


Currently the getErasureCodingCodecs function defined in ClientProtocal returns 
a Hashmap:
{code:java}
  HashMap<String, String> getErasureCodingCodecs() throws IOException;
{code}
It's better to return a Map.




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