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From "Ming Ma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6745) Display the list of "very-under-replicated blocks" as well as the files on NN webUI
Date Fri, 25 Jul 2014 06:34:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14074139#comment-14074139
] 

Ming Ma commented on HDFS-6745:
-------------------------------

CLI will be good. Perhaps people can also specify input parameters such as the definition
of "very-under-replicated". The count of "very-under-replicated" blocks will be good for metrics
system; how about the full text such as block IDs and file names?

> Display the list of "very-under-replicated blocks" as well as the files on NN webUI
> -----------------------------------------------------------------------------------
>
>                 Key: HDFS-6745
>                 URL: https://issues.apache.org/jira/browse/HDFS-6745
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ming Ma
>
> Sometimes admins want to know the list of "very-under-replicated blocks" before major
actions such as decommission; as these blocks are more likely to turn into missing blocks.
"very-under-replicated blocks"  are those blocks with live replica count of 1 and replicator
factor of >= 3.



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