hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thanh Do (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1218) 20 append: Blocks recovered on startup should be treated with lower priority during block synchronization
Date Fri, 26 Nov 2010 23:15:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12936122#action_12936122
] 

Thanh Do commented on HDFS-1218:
--------------------------------

Todd, is this similar to HDFS-1103?
will the problem goes away
if we don't take the replica at the reboot node
in the recovery target?
I.e., we only take RBW replicas into lease recovery,
but not RWR?

> 20 append: Blocks recovered on startup should be treated with lower priority during block
synchronization
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-1218
>                 URL: https://issues.apache.org/jira/browse/HDFS-1218
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.20-append
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.20-append
>
>         Attachments: hdfs-1281.txt
>
>
> When a datanode experiences power loss, it can come back up with truncated replicas (due
to local FS journal replay). Those replicas should not be allowed to truncate the block during
block synchronization if there are other replicas from DNs that have _not_ restarted.

-- 
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