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From Hairong Kuang <hair...@yahoo-inc.com>
Subject Re: HDFS-758 in Hadoop-21 , Updates to Namenode health page
Date Wed, 25 Nov 2009 18:07:16 GMT
+1. Although this is a new feature, I'd like to have it committed to 0.21
since we have so many issues with delayed decomission recently.

Hairong 


On 11/24/09 6:06 PM, "Suresh Srinivas" <sureshms@yahoo-inc.com> wrote:

> +1. This will also help debug the issues when decommissioning takes a long
> time to complete.
> 
> 
> On 11/23/09 7:36 PM, "Jitendra Nath Pandey" <jitendra@yahoo-inc.com> wrote:
> 
> 
> 
>> Hi,
>>>    We will be committing some changes to the Namenode Health page
>>> (dfshealth.jsp) as part of the fix in HDFS-758. This will enable us to
>>> monitor the progress of decommissioning of datanodes more effectively.
>>>    Summary of changes :
>>>    1. A new link on the page for Decommissioning nodes.
>>>    2. This link will point to a new page with details about decommissioning
>>> status for each node which include
>>>         a) Number of under-relplicated blocks in the node.
>>>         b) Number of blocks with only no live replica (i.e. All its replicas
>>> are on decommissioning nodes).
>>>         c) Number of under-replicated blocks in open files.
>>>        d) Time since decommissioning started.
>>>    3. The main page will also contain total number of under-replicated
>>> blocks
>>> in the cluster.
>>> 
>>> Thanks
>>> jitendra
> 
> 


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