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https://issues.apache.org/jira/browse/HDFS-14975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fei Hui updated HDFS-14975:
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Summary: Add LF for SetECPolicyCommand usage (was: Add CR for
SetECPolicyCommand usage)
> Add LF 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
> Fix For: 3.3.0
>
> 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
> {quote}
> [-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
> -----------------here-------------
> [-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.
> {quote}
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