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From Jitendra Nath Pandey <jiten...@yahoo-inc.com>
Subject HDFS-758 in Hadoop-21 , Updates to Namenode health page
Date Tue, 24 Nov 2009 02:36:08 GMT

> 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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