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https://issues.apache.org/jira/browse/HDFS-8905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14999674#comment-14999674
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Kai Zheng commented on HDFS-8905:
---------------------------------

Thanks [~zhz] for the great comments! You understood the changes well and yes, 
the main point of this refactoring is to unify all the relevant operations like 
doRead, copyFrom and etc. into a *read* family methods, which may sound better 
for *ReaderStrategy* to have. Sure I can add more javadocs for the methods to 
make them more clear. Your concern is reasonable, how about moving 
*ReaderStrategy* families (not trivial now) out of *DFSInputStream* to avoid 
the naming conflict? Note there're no sharing variables between the two. 

> Refactor DFSInputStream#ReaderStrategy
> --------------------------------------
>
>                 Key: HDFS-8905
>                 URL: https://issues.apache.org/jira/browse/HDFS-8905
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: erasure-coding
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>         Attachments: HDFS-8905-HDFS-7285-v1.patch, HDFS-8905-v2.patch
>
>
> DFSInputStream#ReaderStrategy family don't look very good. This refactors a 
> little bit to make them make more sense.



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