[jira] Commented: (HADOOP-89) files are not visible until they are closed

["dhruba borthakur (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-89?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531423 ] 

dhruba borthakur commented on HADOOP-89:
----------------------------------------

It is actually HADOOP-1708 that introduced the feature that "files appear in namespace as soon as they are created". I changed the release notes (CHANGES.txt) to ensure that this change appears in the INCOMPATIBLE section rather than in NEW FEATURES section.

> files are not visible until they are closed
> -------------------------------------------
>
>                 Key: HADOOP-89
>                 URL: https://issues.apache.org/jira/browse/HADOOP-89
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.1.0
>            Reporter: Yoram Arnon
>            Assignee: dhruba borthakur
>            Priority: Critical
>             Fix For: 0.15.0
>
>         Attachments: tail.patch, tail3.patch, tail4.patch
>
>
> the current behaviour, whereby a file is not visible until it is closed has several flaws,including:
> 1. no practical way to know if a file/job is progressing
> 2. no way to implement files that never close, such as log files
> 3. failure to close a file results in loss of the file
> The part of the file that's written should be visible.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.