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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7885) Datanode should not trust the generation stamp provided by client
Date Fri, 06 Mar 2015 03:49:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349909#comment-14349909
] 

Tsz Wo Nicholas Sze commented on HDFS-7885:
-------------------------------------------

> -1 patch. Trunk compilation may be broken.

Neither trunk nor the patch has a compilation problem. It was the machine.

- https://builds.apache.org/job/PreCommit-HDFS-Build/9763/artifact/patchprocess/trunkJavacWarnings.txt
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean)
on project hadoop-hdfs: Failed to clean project: Failed to delete /home/jenkins/jenkins-slave/workspace/PreCommit-HDFS-Build/hadoop-hdfs-project/hadoop-hdfs/target/test/data/dfs/data/data3
-> [Help 1]

> Datanode should not trust the generation stamp provided by client
> -----------------------------------------------------------------
>
>                 Key: HDFS-7885
>                 URL: https://issues.apache.org/jira/browse/HDFS-7885
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.2.0
>            Reporter: vitthal (Suhas) Gogate
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Critical
>         Attachments: h7885_20150305.patch, h7885_20150306.patch
>
>
> Datanode should not trust the generation stamp provided by client, since it is prefetched
and buffered in client, and concurrent append may increase it.



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