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From Suresh Srinivas <sures...@yahoo-inc.com>
Subject Re: HDFS-758 in Hadoop-21 , Updates to Namenode health page
Date Wed, 25 Nov 2009 02:06:22 GMT
+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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