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From "Lukas Majercak (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11713) Use MoveFileEx to allow renaming a file when the destination exists
Date Thu, 27 Apr 2017 21:22:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lukas Majercak updated HDFS-11713:
----------------------------------
    Status: Patch Available  (was: Open)

> Use MoveFileEx to allow renaming a file when the destination exists
> -------------------------------------------------------------------
>
>                 Key: HDFS-11713
>                 URL: https://issues.apache.org/jira/browse/HDFS-11713
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs, native, rolling upgrades
>    Affects Versions: 3.0.0-alpha2, 3.0.0-alpha1, 2.7.3, 2.7.1
>            Reporter: Lukas Majercak
>            Assignee: Lukas Majercak
>             Fix For: 3.0.0-alpha2
>
>         Attachments: HDFS-11713.001.patch
>
>
> The {{NativeIO.c#renameTo0}} currently uses {{MoveFile}} Windows system call, which fails
when renaming a file to a destination that already exists.
> This makes the {{TestRollingUpgrade.testRollback}} test fail on Windows, as during that
execution, a DataNode tries to rename block's meta file to a destination that exists.
> The proposal is to change to using {{MoveFileEx}} Windows call, and passing in {{MOVEFILE_REPLACE_EXISTING}}
flag to force the renaming.



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