[jira] [Commented] (MESOS-2265) Introduce an os::rename abstraction to stout.

["Michael Park (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-2265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14544582#comment-14544582 ] 

Michael Park commented on MESOS-2265:
-------------------------------------

{noformat}
commit cd0de6bac148144c6eab0d12935052c9da1a1ff9
Refs:
Author:     Michael Park <mc...@gmail.com>
AuthorDate: Tue Jan 20 11:03:15 2015 -0800
Commit:     Jie Yu <yu...@gmail.com>
CommitDate: Tue Jan 20 11:03:15 2015 -0800

    Added os::rename to stout.

    Review: https://reviews.apache.org/r/30081
{noformat}

> Introduce an os::rename abstraction to stout.
> ---------------------------------------------
>
>                 Key: MESOS-2265
>                 URL: https://issues.apache.org/jira/browse/MESOS-2265
>             Project: Mesos
>          Issue Type: Improvement
>          Components: stout
>            Reporter: Michael Park
>            Assignee: Michael Park
>             Fix For: 0.22.0
>
>
> We introduce an {{os::rename}} abstraction to {{stout}} in order to support atomicity and validity of checkpointed files. Writing directly to the checkpoint file can leave the file in a corrupted state if either: the slave crashes while writing, or checkpointing encounters an error and the slave crashes before the partially written file is removed. We should checkpoint to a temporary file instead and use {{os::rename}} to atomically move it to the desired path.



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