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From "Kai Sasaki (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11394) Add method for getting erasure coding policy through WebHDFS
Date Sat, 13 May 2017 06:17:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kai Sasaki updated HDFS-11394:
------------------------------
    Attachment: HDFS-11394.03.patch

If the ec policy is included in system erasure coding policies, only policy name is shown
through WebHDFS. In case of other policies, {{cellSize}}, {{numDataUnits}}, {{numParityUnits}}
are also shown. 
We can do add the test as followup after {{ErasureCodingPolicyManager}} can load custom policy
in addition to system policies.

> Add method for getting erasure coding policy through WebHDFS 
> -------------------------------------------------------------
>
>                 Key: HDFS-11394
>                 URL: https://issues.apache.org/jira/browse/HDFS-11394
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding, namenode
>            Reporter: Kai Sasaki
>            Assignee: Kai Sasaki
>              Labels: hdfs-ec-3.0-nice-to-have
>         Attachments: HDFS-11394.01.patch, HDFS-11394.02.patch, HDFS-11394.03.patch
>
>
> We can expose erasure coding policy by erasure coded directory through WebHDFS method
as well as storage policy. This information can be used by NameNode Web UI and show the detail
of erasure coded directories.
> see: HDFS-8196



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