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https://issues.apache.org/jira/browse/HDFS-12915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16306500#comment-16306500
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Lei (Eddy) Xu commented on HDFS-12915:
--------------------------------------

[~chris.douglas] Thanks for the patch! +1 on the last patch. 

The {{blockType}} is widely used in HDFS to differentiate a file is EC or not 
today. I think it should not block this patch in. 

I will commit the latest patch soon.  Thanks for taking care of this, 
[~chris.douglas] and thanks for the reviews, [~Sammi]

> Fix findbugs warning in INodeFile$HeaderFormat.getBlockLayoutRedundancy
> -----------------------------------------------------------------------
>
>                 Key: HDFS-12915
>                 URL: https://issues.apache.org/jira/browse/HDFS-12915
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0
>            Reporter: Wei-Chiu Chuang
>         Attachments: HDFS-12915.00.patch, HDFS-12915.01.patch, 
> HDFS-12915.02.patch
>
>
> It seems HDFS-12840 creates a new findbugs warning.
> Possible null pointer dereference of replication in 
> org.apache.hadoop.hdfs.server.namenode.INodeFile$HeaderFormat.getBlockLayoutRedundancy(BlockType,
>  Short, Byte)
> Bug type NP_NULL_ON_SOME_PATH (click for details) 
> In class org.apache.hadoop.hdfs.server.namenode.INodeFile$HeaderFormat
> In method 
> org.apache.hadoop.hdfs.server.namenode.INodeFile$HeaderFormat.getBlockLayoutRedundancy(BlockType,
>  Short, Byte)
> Value loaded from replication
> Dereferenced at INodeFile.java:[line 210]
> Known null at INodeFile.java:[line 207]
> From a quick look at the patch, it seems bogus though. [~eddyxu][~Sammi] 
> would you please double check?



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