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RE: Review HDFS-1765 - HDFS - [mail # dev]
...Thanks a lot for the Nice reviews, Eli! I have updated the patch by fixing the comments. Whenever you get the time, please take a look.  Thanks Uma _____________________________________...
   Author: Uma Maheswara Rao G, 2011-12-10, 00:45
RE: another HDFS configuration for scribeH - HDFS - [mail # dev]
...Hi Eric, Please check my recent experience with the dataloss issue.  http://lucene.472066.n3.nabble.com/Blocks-are-getting-corrupted-under-very-high-load-tt3527403.html#a3532671  h...
   Author: Uma Maheswara Rao G, 2011-12-02, 05:27
RE: Load balancing HDFS - HDFS - [mail # user]
...________________________________     yes, actually speaking it will check many factors while choosing the targets for a block. 1) what is the excivers count. Onaverage excivers cou...
   Author: Uma Maheswara Rao G, 2011-11-30, 14:50
RE: Generation Stamp - HDFS - [mail # user]
... ________________________________     NN will add then into invalidates list and inform to DN through heartbeats responses. Next action in Datanode will be to delete that bloc...
   Author: Uma Maheswara Rao G, 2011-11-30, 12:01
RE: blockID generation - HDFS - [mail # dev]
...you can find the code directly in FSNameSystem#allocateBlock It is just a random long number and will ensure that blockid is not created already by NN. Regards, Uma _________________________...
   Author: Uma Maheswara Rao G, 2011-11-29, 13:00
RE: how to find data nodes on which a file is distributed to? - HDFS - [mail # user]
...ocations.  Regards, Uma ________________________________ From: Praveen Sripati [[EMAIL PROTECTED]] Sent: Monday, November 28, 2011 10:01 PM To: [EMAIL PROTECTED] Subject: Re: how to fin...
   Author: Uma Maheswara Rao G, 2011-11-28, 16:59
RE: hdfs behavior - HDFS - [mail # user]
...I think, you might not completed even single block write completely.  Length will be updated in NN after completing the block. Currently partial block lengths will not be included in le...
   Author: Uma Maheswara Rao G, 2011-11-28, 12:32
RE: Clarification on federated HDFS - HDFS - [mail # user]
...Hey Shesha,    In Fedatated HDFS, same DataNodes can work with multiple NameNode.  Where as in your setup, complete cluster itself is different.    I would suggest y...
   Author: Uma Maheswara Rao G, 2011-11-28, 05:21
RE: What does hdfs balancer do after adding more disks to existing datanode. - HDFS - [mail # dev]
...Hi,  Current volume choosing policy is round robin fashion, Since the DN got new disk, balancer will balance some blocks to this node. But the volume choosing will be same when palcing ...
   Author: Uma Maheswara Rao G, 2011-11-22, 11:56
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