[
https://issues.apache.org/jira/browse/HADOOP-5556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745339#action_12745339
]
Hadoop QA commented on HADOOP-5556:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12417111/HADOOP-5556.patch
against trunk revision 804918.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 12 new or modified tests.
-1 patch. The patch command could not apply the patch.
Console output:
http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-vesta.apache.org/616/console
This message is automatically generated.
> A few improvements to DataNodeCluster
> -------------------------------------
>
> Key: HADOOP-5556
> URL: https://issues.apache.org/jira/browse/HADOOP-5556
> Project: Hadoop Common
> Issue Type: Bug
> Components: test
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Fix For: 0.21.0
>
> Attachments: DataNodeCluster.patch, HADOOP-5556.patch
>
>
> DataNodeCluster is a great tool to simulate a large scale DFS cluster using a
> small set of machines. A few suggestions to improve this tool:
> # DataNodeCluster uses MiniDFSCluster#startDataNode to start multiple
> instances of DataNode on one machine. MiniDFSCluster sets DataNode's address
> to be 127.0.0.1. We should allow to set its address to 0.0.0.0 so DataNodes
> in different machines could communicate.
> # Currently the size of the blocks injected to DataNode and created in
> CreatedEditsLog is hardcoded as 10. It would be more convenient if this could
> be configurable. Also we need to make sure that both use the same block size.
> # If the replication factor of blocks is larger than 1, currently a DataNode
> in DataNodeCluster will be injected blocks multiple times and therefore it
> sends block reports to NameNode multiple times. Initial block reports contain
> only a portion of its blocks and therefore may cause unnecessary block
> replications. It would be cleaner if only one block report with all its
> blocks is sent.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
