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https://issues.apache.org/jira/browse/HDFS-8672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583667#comment-15583667
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Andrew Wang commented on HDFS-8672:
-----------------------------------

Hi folks, any update on this JIRA? We've been having a related discussion on 
HDFS-10999, and it came up that it'd be really nice to have these 
recovery-related metrics.

> Erasure Coding: Add EC-related Metrics to NN (seperate striped blocks count 
> from UnderReplicatedBlocks count)
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8672
>                 URL: https://issues.apache.org/jira/browse/HDFS-8672
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Walter Su
>            Assignee: Walter Su
>            Priority: Minor
>
> 1. {{MissingBlocks}} metric is updated in HDFS-8461 so it includes striped 
> blocks.
> 2. {{CorruptBlocks}} metric is updated in HDFS-8619 so it includes striped 
> blocks.
> 3. {{UnderReplicatedBlocks}} and {{PendingReplicationBlocks}} includes 
> striped blocks (HDFS-7912).
> This jira aims to seperate striped blocks count from 
> {{UnderReplicatedBlocks}} count.
> EC file recovery need coding. It's more expensive than block duplication.
> It's necessary to seperate striped blocks count from UnderReplicatedBlocks 
> count. So user can know what's going on.



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