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https://issues.apache.org/jira/browse/HDFS-8499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14571457#comment-14571457
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Zhe Zhang commented on HDFS-8499:
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Casting from {{BI}} to {{BIUC}} isn't actually an issue because the
{{instanceof}} check is always used before casting.
In the next rev I plan to convert some {{BIUC}} methods as abstract and move
the implementation to {{BIUCCongtiguous}}, based on whether the logic differs
in contiguous and striped subclasses. [~jingzhao] I wonder if we should unify
{{replicas}} in both subclasses to either list or array?
> Merge BlockInfoUnderConstruction into trunk
> -------------------------------------------
>
> Key: HDFS-8499
> URL: https://issues.apache.org/jira/browse/HDFS-8499
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: 2.7.0
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Attachments: HDFS-8499.00.patch
>
>
> In HDFS-7285 branch, the {{BlockInfoUnderConstruction}} interface provides a
> common abstraction for striped and contiguous UC blocks. This JIRA aims to
> merge it to trunk.
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