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From Harshit Mathur <mathursh...@gmail.com>
Subject Re: How will Hadoop handle it when a datanode server with total hardware failure?
Date Wed, 17 Dec 2014 07:24:30 GMT
Hi Arthur,

In HDFS there will be block level replication, In case of total failure of
a datanode the lost blocks will get under replicated hence the namenode
will create copy of these under replicated blocks on some other datanode.


On Wed, Dec 17, 2014 at 11:35 AM, Arthur.hk.chan@gmail.com <
arthur.hk.chan@gmail.com> wrote:
> Hi,
> If each of  my datanode servers has 8 hard disks (a 10-node cluster) and I
> use the default replication factor of 3, how will Hadoop handle it when a
> datanode with total hardware failure suddenly?
> Regards
> Arthur

Harshit Mathur

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