hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1263) 0.20: in tryUpdateBlock, the meta file is renamed away before genstamp validation is done
Date Wed, 23 Jun 2010 08:10:50 GMT
0.20: in tryUpdateBlock, the meta file is renamed away before genstamp validation is done
-----------------------------------------------------------------------------------------

                 Key: HDFS-1263
                 URL: https://issues.apache.org/jira/browse/HDFS-1263
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: data-node
    Affects Versions: 0.20-append
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
             Fix For: 0.20-append


Saw an issue where multiple datanodes are trying to recover at the same time, and all of them
failed. I think the issue is in FSDataset.tryUpdateBlock, we do the rename of blk_B_OldGS
to blk_B_OldGS_tmpNewGS and *then* check that the generation stamp is moving upwards. Because
of this, invalid update block calls are blocked, but they then cause future updateBlock calls
to fail with "Meta file not found" errors.

-- 
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