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https://issues.apache.org/jira/browse/HDFS-17052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hualong Zhang updated HDFS-17052:
---------------------------------
Description:
When writing EC data, if the number of racks matching the storageType is
insufficient, more than one block are allowed to be written to the same rack
!write ec in same rack.png|width=962,height=604!
However, during EC block recovery, it is not possible to recover on the same
rack, which deviates from the expected behavior.
!failed reconstruction ec in same rack.png|width=946,height=413!
was:
When writing EC data, if the number of racks matching the storageType is
insufficient, more than one block are allowed to be written to the same rack
!write ec in same rack.png!
However, during EC block recovery, it is not possible to recover on the same
rack, which deviates from the expected behavior.
> Erasure coding reconstruction failed when num of storageType rack NOT enough
> ----------------------------------------------------------------------------
>
> Key: HDFS-17052
> URL: https://issues.apache.org/jira/browse/HDFS-17052
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ec
> Affects Versions: 3.3.4
> Reporter: Hualong Zhang
> Assignee: Hualong Zhang
> Priority: Major
> Labels: pull-request-available
> Attachments: failed reconstruction ec in same rack.png, write ec in
> same rack.png
>
>
> When writing EC data, if the number of racks matching the storageType is
> insufficient, more than one block are allowed to be written to the same rack
> !write ec in same rack.png|width=962,height=604!
>
>
>
> However, during EC block recovery, it is not possible to recover on the same
> rack, which deviates from the expected behavior.
> !failed reconstruction ec in same rack.png|width=946,height=413!
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