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From "Takanobu Asanuma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10999) Use more generic "low redundancy" blocks instead of "under replicated" blocks
Date Tue, 21 Feb 2017 05:17:44 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15875384#comment-15875384
] 

Takanobu Asanuma commented on HDFS-10999:
-----------------------------------------

Hi all, thanks for the discussion. I would like to propose my suggestion.

I understand how important to divide the metrics into replicated-blocks and ec-block-groups.
But I also think summarized(repl+ec) metrics are useful. At the moment, in {{FSNamesystem}},
{{FSNamesystemMBean}} has the summarized metrics. How about leaving {{FSNamesystemMBean}}
as is and adding new two mbeans for replicated-blocks and ec-block-groups to {{FSNamesystem}}?
In this way, it would be easy to keep code consistency with branch-2.

> Use more generic "low redundancy" blocks instead of "under replicated" blocks
> -----------------------------------------------------------------------------
>
>                 Key: HDFS-10999
>                 URL: https://issues.apache.org/jira/browse/HDFS-10999
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Wei-Chiu Chuang
>            Assignee: Manoj Govindassamy
>              Labels: hdfs-ec-3.0-nice-to-have, supportability
>
> Per HDFS-9857, it seems in the Hadoop 3 world, people prefer the more generic term "low
redundancy" to the old-fashioned "under replicated". But this term is still being used in
messages in several places, such as web ui, dfsadmin and fsck. We should probably change them
to avoid confusion.
> File this jira to discuss it.



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