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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11426) Refactor EC CLI to be similar to storage policies CLI
Date Tue, 21 Feb 2017 21:31:44 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15876761#comment-15876761

Wei-Chiu Chuang commented on HDFS-11426:

[~andrew.wang] I caught another issue with the patch. The unset ec policy command works for
a directory, not a file.

  /** Command to unset the erasure coding policy set for a file/directory */
  private static class UnsetECPolicyCommand
      implements AdminHelper.Command {

    public String getName() {
      return "-unsetPolicy";

    public String getShortUsage() {
      return "[" + getName() + " -path <path>]\n";

    public String getLongUsage() {
      TableListing listing = AdminHelper.getOptionDescriptionListing();
      listing.addRow("<path>", "The path of the file/directory "
          + "from which the erasure coding policy will be unset.");
      return getShortUsage() + "\n"
          + "Unset the erasure coding policy for a file/directory.\n\n"
          + listing.toString();

> Refactor EC CLI to be similar to storage policies CLI
> -----------------------------------------------------
>                 Key: HDFS-11426
>                 URL: https://issues.apache.org/jira/browse/HDFS-11426
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding, shell
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HDFS-11426.001.patch, HDFS-11426.002.patch
> The {{hdfs erasurecode}} CLI is similar to {{hdfs storagepolicies}} in terms of functionality,
but different in terms of behavior. Let's refactor {{ECCli}} to be more similar to the various
Admin classes we already have, and also make its calling syntax mimic {{hdfs storagepolicies}}
as closely as possible.

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