[jira] [Commented] (HDFS-10999) Use more generic "low redundancy" blocks instead of "under replicated" blocks

["Wei-Chiu Chuang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-10999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15568050#comment-15568050 ] 

Wei-Chiu Chuang commented on HDFS-10999:
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One thing I want to call out is metrics names. There are metrics named "UnderReplicatedBlocks", "PendingReplicationBlocks" and etc. Changing them are supposedly incompatible, especially for monitoring systems (such as Cloudera Manager or Ambari).

[~zhz] [~andrew.wang] appreciate if you can comment on this. Thanks!

> 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: Yuanbo Liu
>              Labels: 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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