what happens when a datanode rejoins?

2012-09-11 Thread Mehul Choube
Hi, What happens when an existing (not new) datanode rejoins a cluster for following scenarios: 1. Some of the blocks it was managing are deleted/modified? 2. The size of the blocks are now modified say from 64MB to 128MB? 3. What if the block replication factor was one

what happens when a datanode rejoins?

2012-09-11 Thread mehul choube
Hi, What happens when an existing (not new) datanode rejoins a cluster for following scenarios: a) Some of the blocks it was managing are deleted/modified? b) The size of the blocks are now modified say from 64MB to 128MB? c) What if the block replication factor was one (yea not in most

RE: what happens when a datanode rejoins?

2012-09-11 Thread Mehul Choube
The namenode will asynchronously replicate the blocks to other datanodes in order to maintain the replication factor after a datanode has not been in contact for 10 minutes. What happens when the datanode rejoins after namenode has already re-replicated the blocs it was managing? Will

RE: what happens when a datanode rejoins?

2012-09-11 Thread Mehul Choube
of only NameNode. Thanks Regards, Ramesh.Narasingu On Tue, Sep 11, 2012 at 2:36 PM, Mehul Choube mehul_cho...@symantec.commailto:mehul_cho...@symantec.com wrote: The namenode will asynchronously replicate the blocks to other datanodes in order to maintain the replication factor after

libhdfs port to windows

2011-12-05 Thread Mehul Choube
Hi, Has anyone ported libhdfs to windows platform? If yes how was the experience? Thanks, Mehul