[jira] [Created] (HDFS-7867) Update action param from "start" to "prepare" in rolling upgrade code comment.

[J.Andreina (JIRA)]

J.Andreina created HDFS-7867:
--------------------------------

             Summary: Update action param from "start" to "prepare" in rolling 
upgrade code comment.
                 Key: HDFS-7867
                 URL: https://issues.apache.org/jira/browse/HDFS-7867
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: J.Andreina
            Assignee: J.Andreina
            Priority: Trivial


In the following  code comment rolling upgrade action "start" should be updated 
to "prepare"

DistributedFileSystem.java :

{noformat}
 /**
   * Rolling upgrade: start/finalize/query.
   */
  public RollingUpgradeInfo rollingUpgrade(RollingUpgradeAction action)
      throws IOException {
{noformat}

ClientProtocol.java :
{noformat}
        /**
   * Rolling upgrade operations.
   * @param action either query, start or finailze.
   * @return rolling upgrade information.
   */
  @Idempotent
  public RollingUpgradeInfo rollingUpgrade(RollingUpgradeAction action)
      throws IOException;
{noformat}



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