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https://issues.apache.org/jira/browse/HDFS-11505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15898529#comment-15898529
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Kai Zheng commented on HDFS-11505:
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So assume some policies are enabled by the configuration, will users have to
specify some one when create a file/folder or assign/set policy to it later?
I'm asking this because, I'm wondering, for most applications/users they might
not want to bother to query/check the enabled policies first to pick up some to
specify. If users don't have to or the policy parameter is optional, I guess we
could use the first one in the enabled list. Thoughts?
> Do not enable any erasure coding policies by default
> ----------------------------------------------------
>
> Key: HDFS-11505
> URL: https://issues.apache.org/jira/browse/HDFS-11505
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: erasure-coding
> Affects Versions: 3.0.0-alpha3
> Reporter: Andrew Wang
> Assignee: Manoj Govindassamy
> Labels: hdfs-ec-3.0-must-do
>
> As discussed on HDFS-11314, administrators need to choose the correct set of
> EC policies based on cluster size and desired fault-tolerance properties.
> This means we should not enable any EC policies by default, since any default
> value could be incorrect.
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