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HDFS write failures!

I was going through some documents about HDFS write pattern. It looks like
the write pipeline is closed when a error is encountered and the faulty
node is  taken out of the pipeline and the write continues.Few other
intermediate steps are to move the un-acked packets from ack queue to the
data queue.

My question is , is this faulty data node is reported to the NN and whether
NN would continue to use it as a valid DN while serving other write
requests in future or will it make it as faulty ?

Ravi Prakash 2013-05-17, 18:14
Rahul Bhattacharjee 2013-05-18, 11:54