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https://issues.apache.org/jira/browse/HDFS-11268?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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SammiChen updated HDFS-11268:
-----------------------------
    Status: Patch Available  (was: Open)

> Correctly reconstruct erasure coding file from FSImage
> ------------------------------------------------------
>
>                 Key: HDFS-11268
>                 URL: https://issues.apache.org/jira/browse/HDFS-11268
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha1
>            Reporter: SammiChen
>            Assignee: SammiChen
>            Priority: Critical
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HDFS-11268-001.patch
>
>
> Currently, FSImageFormatProtoBuf has the information about whether the file 
> is striped or not and saved file's erasure coding policy ID in replication 
> field. But later, when FSImage is loaded to create the name space, the 
> default system erasure coding policy is used to reconstruct file's block 
> structure.  In case if the erasure coding policy of file is not the default 
> erasure coding policy, the content of the file cannot be accessed correctly. 



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