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https://issues.apache.org/jira/browse/HDFS-11072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15770272#comment-15770272
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Rakesh R commented on HDFS-11072:
---------------------------------
Thanks [~Sammi] for the analysis.
bq. 2. removeErasureCodingPolicy
Since we are already using {{set/unset}} API pattern for the storage policy,
I'd prefer to create {{#unsetErasureCodingPolicy()}} API instead of
{{#removeErasureCodingPolicy()}} API.
{quote}
3. setDefaultReplicationPolicy
set replication on directory. This is only useful when user wants the directory
from stop inheriting from it's parent's ec policy.
{quote}
I understand there will be many use cases, like distcp(Thanks [~andrew.wang]
for pointing out this) etc. IMHO, implementing this logic requires more focused
coding/unit testing and reviews. How about separating out this task alone and
pushing via HDFS-11082 jira. Please feel free to assign HDFS-11082 task to you.
> Add ability to unset and change directory EC policy
> ---------------------------------------------------
>
> Key: HDFS-11072
> URL: https://issues.apache.org/jira/browse/HDFS-11072
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: erasure-coding
> Affects Versions: 3.0.0-alpha1
> Reporter: Andrew Wang
> Assignee: SammiChen
> Labels: hdfs-ec-3.0-must-do
> Attachments: HDFS-11072-v1.patch, HDFS-11072-v2.patch,
> HDFS-11072-v3.patch, HDFS-11072-v4.patch
>
>
> Since the directory-level EC policy simply applies to files at create time,
> it makes sense to make it more similar to storage policies and allow changing
> and unsetting the policy.
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