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https://issues.apache.org/jira/browse/HDFS-7710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14311023#comment-14311023
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Tsz Wo Nicholas Sze commented on HDFS-7710:
-------------------------------------------

Hi, there is a findbugs warning committed.  Please take a look.
- Multithreaded correctness Warnings
IS      Inconsistent synchronization of 
org.apache.hadoop.hdfs.server.namenode.BackupImage.namesystem; locked 60% of 
time
https://builds.apache.org/job/PreCommit-HDFS-Build/9382/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html

> Remove dead code in BackupImage.java
> ------------------------------------
>
>                 Key: HDFS-7710
>                 URL: https://issues.apache.org/jira/browse/HDFS-7710
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>            Priority: Minor
>             Fix For: 2.7.0
>
>         Attachments: HDFS-7710.0.patch
>
>
> BackupImage#saveCheckpoint() is not being used anywhere. This JIRA is 
> proposed to clean it up.



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