hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1476) listCorruptFileBlocks should be functional while the name node is still in safe mode
Date Wed, 17 Nov 2010 06:30:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12932834#action_12932834
] 

dhruba borthakur commented on HDFS-1476:
----------------------------------------

The code looks good, +1.

There seems to be 3 findbugs warnings, can you fix them? Once done, I will commit it.

> listCorruptFileBlocks should be functional while the name node is still in safe mode
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-1476
>                 URL: https://issues.apache.org/jira/browse/HDFS-1476
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Patrick Kling
>            Assignee: Patrick Kling
>         Attachments: HDFS-1476.2.patch, HDFS-1476.patch
>
>
> This would allow us to detect whether missing blocks can be fixed using Raid and if that
is the case exit safe mode earlier.
> One way to make listCorruptFileBlocks available before the name node has exited from
safe mode would be to perform a scan of the blocks map on each call to listCorruptFileBlocks
to determine if there are any blocks with no replicas. This scan could be parallelized by
dividing the space of block IDs into multiple intervals than can be scanned independently.

-- 
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