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https://issues.apache.org/jira/browse/HDFS-8120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhe Zhang updated HDFS-8120:
----------------------------
    Attachment: HDFS-8120.008.patch

Thanks Bo for the update! I compared 007 to 005 and the changes look good to 
me. 

I made some minor updates in 008 patch (added some comments, changed a test 
parameter in {{TestDFSStripedOutputStream#TestFileMoreThanABlockGroup2}} to 
make it different from {{TestFileMoreThanABlockGroup1}}.

[~jingzhao] Please let me know if the latest patch looks OK. W.r.t. HDFS-8145, 
I think your solution is a good idea. 

> Erasure coding: created util class to analyze striped block groups
> ------------------------------------------------------------------
>
>                 Key: HDFS-8120
>                 URL: https://issues.apache.org/jira/browse/HDFS-8120
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-8120.000.patch, HDFS-8120.001.patch, 
> HDFS-8120.002.patch, HDFS-8120.003.patch, HDFS-8120.004.patch, 
> HDFS-8120.005.patch, HDFS-8120.006.patch, HDFS-8120.007.patch, 
> HDFS-8120.008.patch
>
>
> The patch adds logic of calculating size of individual blocks in a striped 
> block group.



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