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From "SammiChen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11975) Provide a system-default EC policy
Date Tue, 27 Jun 2017 18:49:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16065282#comment-16065282
] 

SammiChen commented on HDFS-11975:
----------------------------------

Currently, all build-in EC policies are disabled by default. After we introduce the system-default
EC policy, for easy configuration, I suggest this system-default EC policy been enabled by
default.  [~drankye], [~eddyxu], I'd like to know your opinions.  

> Provide a system-default EC policy
> ----------------------------------
>
>                 Key: HDFS-11975
>                 URL: https://issues.apache.org/jira/browse/HDFS-11975
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Lei (Eddy) Xu
>            Assignee: luhuichun
>         Attachments: HDFS-11975-001.patch
>
>
> From the usability point of view, it'd be nice to be able to specify a system-wide EC
policy, i.e., in {{hdfs-site.xml}}. For most of users / admin / downstream projects, it is
not necessary to know the tradeoffs of the EC policy, considering that it requires the knowledge
of EC, the actual physical topology of the clusters, and many other factors (i.e., network,
cluster size and etc).
>  



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