[jira] [Created] (HDFS-15633) Avoid redundant RPC calls for getDiskStatus

["Ayush Saxena (Jira)" <ji...@apache.org>]

Ayush Saxena created HDFS-15633:
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             Summary: Avoid redundant RPC calls for getDiskStatus
                 Key: HDFS-15633
                 URL: https://issues.apache.org/jira/browse/HDFS-15633
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: dfsclient
            Reporter: Ayush Saxena
            Assignee: Ayush Saxena


There are 3 RPC calls to fetch the same values :

{code:java}
  public FsStatus getDiskStatus() throws IOException {
    return new FsStatus(getStateByIndex(0),
        getStateByIndex(1), getStateByIndex(2));
  }
{code}

{{getStateByIndex()}} is called thrice, which is actually a {{getStats}} RPC to namenode, The same could have been achieved by just one call



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