hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1186) 0.20: DNs should interrupt writers at start of recovery
Date Thu, 03 Jun 2010 20:05:56 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon updated HDFS-1186:
------------------------------

    Attachment: hdfs-1186.txt

This seems to fix this issue (also includes unit test)

> 0.20: DNs should interrupt writers at start of recovery
> -------------------------------------------------------
>
>                 Key: HDFS-1186
>                 URL: https://issues.apache.org/jira/browse/HDFS-1186
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.20-append
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>         Attachments: hdfs-1186.txt
>
>
> When block recovery starts (eg due to NN recovering lease) it needs to interrupt any
writers currently writing to those blocks. Otherwise, an old writer (who hasn't realized he
lost his lease) can continue to write+sync to the blocks, and thus recovery ends up truncating
data that has been sync()ed.

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


Mime
View raw message