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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10827) When there are unrecoverable ec block groups, Namenode Web UI shows "There are X missing blocks." but doesn't show the block names.
Date Fri, 14 Oct 2016 20:25:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-10827:
-----------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 3.0.0-alpha2
           Status: Resolved  (was: Patch Available)

+1 on the latest patch. I've committed it into trunk. Thanks for the contribution, [~tasanuma0829]!

> When there are unrecoverable ec block groups, Namenode Web UI shows "There are X missing
blocks." but doesn't show the block names.
> -----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-10827
>                 URL: https://issues.apache.org/jira/browse/HDFS-10827
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>            Reporter: Takanobu Asanuma
>            Assignee: Takanobu Asanuma
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HDFS-10827.1.patch, HDFS-10827.2.patch, HDFS-10827.3.patch, HDFS-10827.4.patch,
case_2.png, case_3.png
>
>
> For RS-6-3, when there is one ec block group and
> 1) 0~3 out of 9 internal blocks are missing, NN Web UI doesn't show any warns.
> 2) 4~8 out of 9 internal blocks are missing, NN Web UI shows "There are 1 missing blocks."
but doesn't show the block names. (please see case_2.png)
> 3) 9 out of 9 internal blocks are missing, NN Web UI shows "There are 1 missing blocks."
and also shows the block name. (please see case_3.png)
> We should fix the case 2). I think NN Web UI should show the block names since the ec
block group is unrecoverable.
> The values come from JMX. "There are X missing blocks." is {{NumberOfMissingBlocks}}
and the block names are {{CorruptFiles}}.



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