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Posted to hdfs-issues@hadoop.apache.org by "luhuichun (JIRA)" <ji...@apache.org> on 2017/07/04 13:28:00 UTC
[jira] [Comment Edited] (HDFS-11975) Provide a system-default EC
policy
[ https://issues.apache.org/jira/browse/HDFS-11975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16071874#comment-16071874 ]
luhuichun edited comment on HDFS-11975 at 7/4/17 1:27 PM:
----------------------------------------------------------
[~eddyxu]，[~Sammi]，[~drankye] Update the patch, the failed unit test is solved. For the issue of system-default EC policy, I add two const in DFSConfigKeys.java. One for user setting, the other is hard code default value "RS-6-3-64k". The NameNodeRpcServer do the judgement according to the configuration and user CLI. Thanks for reviewing.
was (Author: luhuichun):
[~eddyxu][~Sammi][~drankye] Update the patch, the failed unit test is solved. For the issue of system-default EC policy, I set a two configuration in DFSConfigKeys.java. One for user setting, the other is hard code default value "RS-6-3-64k". The NameNodeRpcServer do the judgement according to the configuration and user CLI. Thanks for reviewing.
> 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, HDFS-11975-002.patch, HDFS-11975-003.patch, HDFS-11975-004.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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