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https://issues.apache.org/jira/browse/HDFS-11605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15973975#comment-15973975
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Kai Zheng commented on HDFS-11605:
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Some quick comments:
In NN side, when to add the new policies, we need to:
* Validate each policy to ensure its parameters are all in good form;
* Check its uniqueness among existing policies to make sure no conflict. I
thought EC policy and/or schema have implemented {{equal()}} method?
A minor: "Add Erasure coding policies to HDFS." => "Add erasure coding
policies."
> Allow user to customize and add new erasure code codecs and policies
> --------------------------------------------------------------------
>
> Key: HDFS-11605
> URL: https://issues.apache.org/jira/browse/HDFS-11605
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: erasure-coding
> Reporter: Kai Zheng
> Assignee: Huafeng Wang
> Fix For: 3.0.0-alpha3
>
> Attachments: HDFS-11605.001.patch
>
>
> Based on the facility developed in HDFS-11604, this will develop necessary
> CLI cmd to load an XML file and the results will be maintained in NameNode
> {{ErasureCodingPolicyManager}} as {{USER_POLICIES}} in line with
> {{SYS_POLICIES}}.
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