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From "Ravi Prakash (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7753) Fix Multithreaded correctness Warnings in BackupImage.java
Date Mon, 09 Feb 2015 18:09:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14312550#comment-14312550
] 

Ravi Prakash commented on HDFS-7753:
------------------------------------

Hi Rakesh! Not very many people use the BackupNode. You might want to check with Konstantin
Svachko about this.

> Fix Multithreaded correctness Warnings in BackupImage.java
> ----------------------------------------------------------
>
>                 Key: HDFS-7753
>                 URL: https://issues.apache.org/jira/browse/HDFS-7753
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>         Attachments: HDFS-7753.patch
>
>
> Inconsistent synchronization of org.apache.hadoop.hdfs.server.namenode.BackupImage.namesystem;
locked 60% of time
> {code}
> Bug type IS2_INCONSISTENT_SYNC (click for details) 
> In class org.apache.hadoop.hdfs.server.namenode.BackupImage
> Field org.apache.hadoop.hdfs.server.namenode.BackupImage.namesystem
> Synchronized 60% of the time
> Unsynchronized access at BackupImage.java:[line 97]
> Unsynchronized access at BackupImage.java:[line 261]
> Synchronized access at BackupImage.java:[line 197]
> Synchronized access at BackupImage.java:[line 212]
> Synchronized access at BackupImage.java:[line 295]
> {code}
> https://builds.apache.org/job/PreCommit-HDFS-Build/9493//artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html#Details



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