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] Created: (HDFS-1501) The logic that makes namenode exit safemode should be pluggable
Date Wed, 17 Nov 2010 01:09:18 GMT
The logic that makes namenode exit safemode should be pluggable
---------------------------------------------------------------

                 Key: HDFS-1501
                 URL: https://issues.apache.org/jira/browse/HDFS-1501
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: dhruba borthakur
            Assignee: Patrick Kling


HDFS RAID creates parity blocks for data blocks. So, even if all replicas of a block is missing,
it is possible ro recreate it from the parity blocks. Thus, when the namenode restarts, it
should use a different RAID-aware logic to figure out whether all blocks are healthy or not.

My proposal is to make the code that NN uses to exit safemode be pluggable.

-- 
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