[jira] [Updated] (HDFS-14975) Add CR for SetECPolicyCommand usage

["Fei Hui (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-14975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fei Hui updated HDFS-14975:
---------------------------
    Attachment: HDFS-14975.001.patch

> Add CR for SetECPolicyCommand usage
> -----------------------------------
>
>                 Key: HDFS-14975
>                 URL: https://issues.apache.org/jira/browse/HDFS-14975
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 3.3.0
>            Reporter: Fei Hui
>            Assignee: Fei Hui
>            Priority: Trivial
>         Attachments: HDFS-14975.001.patch
>
>
> *bin/hdfs ec -help* output the following message
> {quote}
> [-listPolicies]
> Get the list of all erasure coding policies.
> [-addPolicies -policyFile <file>]
> Add a list of user defined erasure coding policies.
> <file>  The path of the xml file which defines the EC policies to add 
> [-getPolicy -path <path>]
> Get the erasure coding policy of a file/directory.
> <path>  The path of the file/directory for getting the erasure coding policy 
> [-removePolicy -policy <policy>]
> Remove an user defined erasure coding policy.
> <policy>  The name of the erasure coding policy 
> [-setPolicy -path <path> [-policy <policy>] [-replicate]]
> Set the erasure coding policy for a file/directory.
> <path>      The path of the file/directory to set the erasure coding policy 
> <policy>    The name of the erasure coding policy                           
> -replicate  force 3x replication scheme on the directory                    
> -replicate and -policy are optional arguments. They cannot been used at the same time
> [-unsetPolicy -path <path>]
> Unset the erasure coding policy for a directory.
> <path>  The path of the directory from which the erasure coding policy will be 
>         unset.                                                                 
> [-listCodecs]
> Get the list of supported erasure coding codecs and coders.
> A coder is an implementation of a codec. A codec can have different implementations, thus different coders.
> The coders for a codec are listed in a fall back order.
> [-enablePolicy -policy <policy>]
> Enable the erasure coding policy.
> <policy>  The name of the erasure coding policy 
> [-disablePolicy -policy <policy>]
> Disable the erasure coding policy.
> <policy>  The name of the erasure coding policy 
> [-verifyClusterSetup [-policy <policy>...<policy>]]
> Verify if the cluster setup can support all enabled erasure coding policies. If optional parameter -policy is specified, verify if the cluster setup can support the given policy.
> {quote}
> The output format is not so good to users
> We should add CR between SetECPolicyCommand and UnsetECPolicyCommand like other commands



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