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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10919) Provide admin/debug tool to dump out info of a given block
Date Wed, 28 Sep 2016 17:32:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yongjun Zhang updated HDFS-10919:
---------------------------------
    Target Version/s: 3.0.0-alpha2

> Provide admin/debug tool to dump out info of a given block
> ----------------------------------------------------------
>
>                 Key: HDFS-10919
>                 URL: https://issues.apache.org/jira/browse/HDFS-10919
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: hdfs
>            Reporter: Yongjun Zhang
>
> We have fsck to find out blocks associated with a file, which is nice. Sometimes, we
saw trouble with a specific block, we'd like to collect info about this block, such as
> * what file this block belong to, 
> * where the replicas of this block are located, 
> * whether the block is EC coded; 
> * if a block is EC coded, whether it's a data block, or code
> * if a block is EC coded, what's the codec.
> * if a block is EC coded, what's the block group
> * for the block group, what are the other blocks
> Create this jira to provide such a util, as dfsadmin, or a debug tool.
> Thanks.



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