hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xi Fang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4975) Branch-1-win TestReplicationPolicy failed caused by stale data node handling
Date Wed, 10 Jul 2013 22:45:49 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xi Fang updated HDFS-4975:
--------------------------

    Attachment: HDFS-4975.2.patch
    
> Branch-1-win TestReplicationPolicy failed caused by stale data node handling
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-4975
>                 URL: https://issues.apache.org/jira/browse/HDFS-4975
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 1-win
>            Reporter: Xi Fang
>            Assignee: Xi Fang
>             Fix For: 1-win
>
>         Attachments: HADOOP-9714.1.patch, HDFS-4975.2.patch
>
>
> TestReplicationPolicy failed on 
> * testChooseTargetWithMoreThanAvailableNodes()
> * testChooseTargetWithStaleNodes()
> * testChooseTargetWithHalfStaleNodes()
> The root of cause of testChooseTargetWithMoreThanAvailableNodes failing is the following:
> In BlockPlacementPolicyDefault#chooseTarget()
> {code}
>   chooseRandom(numOfReplicas, NodeBase.ROOT, excludedNodes, 
>         blocksize, maxNodesPerRack, results);
>     } catch (NotEnoughReplicasException e) {
>       FSNamesystem.LOG.warn("Not able to place enough replicas, still in need of " +
numOfReplicas);
> {code}
> However, numOfReplicas is passed into chooseRandom() as int (primitive type in java)
by value. The updating operation for numOfReplicas in chooseRandom() will not change the value
in chooseTarget(). 
> The root cause for testChooseTargetWithStaleNodes() and testChooseTargetWithHalfStaleNodes()
is the current BlockPlacementPolicyDefault#chooseTarget() doesn't check if a node is stale.
 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message