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https://issues.apache.org/jira/browse/HDFS-8653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14649807#comment-14649807
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Zhe Zhang commented on HDFS-8653:
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[~szetszwo] Majority of this patch is just code cleanup, such as removing
unnecessary type info when creating generics {{ArrayList}}.
Only logics change is to add a few {{null}} checker in {{DataodeStorageInfo}}
and it was from HDFS-8323.
> Code cleanup for DatanodeManager, DatanodeDescriptor and DatanodeStorageInfo
> ----------------------------------------------------------------------------
>
> Key: HDFS-8653
> URL: https://issues.apache.org/jira/browse/HDFS-8653
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.7.0
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Fix For: 2.8.0
>
> Attachments: HDFS-8653.00.patch
>
>
> While updating the {{blockmanagement}} module to distribute erasure coding
> recovery work to Datanode, the HDFS-7285 branch also did some code cleanup
> that should be merged into trunk independently.
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