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https://issues.apache.org/jira/browse/HDFS-8835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14649840#comment-14649840
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Tsz Wo Nicholas Sze commented on HDFS-8835:
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> HDFS-8487 (as well as HDFS-8653, HDFS-8605) just try to divide-and-conquer 
> the (inevitable) inconvenience for the community to understand and accept the 
> EC change. I feel this way is easier than absorbing the huge change all at 
> once.  ...

Please don't  do it anymore.  We probably should revert all these patch.  We 
should not sneak in branch code to trunk.  The entire branch should be reviewed 
together.

> Convert BlockInfoUnderConstruction as an interface
> --------------------------------------------------
>
>                 Key: HDFS-8835
>                 URL: https://issues.apache.org/jira/browse/HDFS-8835
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.7.1
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>
> Per discussion under HDFS-8499, this JIRA aims to convert 
> {{BlockInfoUnderConstruction}} as an interface and 
> {{BlockInfoContiguousUnderConstruction}} as its implementation. The HDFS-7285 
> branch will add {{BlockInfoStripedUnderConstruction}} as another 
> implementation.



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