speed of replication for under replicated blocks by namenode

2014-05-06 Thread chandra kant
Hi, Some of my blocks are under replicated. Can anybody tell me at what speed namenode replicates it so that dfs.replication factor is satisfied and blocks become normal again? Or does it depend upon load factor on namenode and it can't be measured? Chandra

speed of replication for under replicated blocks by namenode

2014-05-11 Thread chandra kant
Hi, Some of my blocks are under replicated. Can anybody tell me at what speed namenode replicates it so that dfs.replication factor is satisfied and blocks become normal again? Or does it solely depend upon load factor on namenode and it can't be measured accurately? thanx Chandra

Re: speed of replication for under replicated blocks by namenode

2014-05-12 Thread Ravi Prakash
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Chandra! Replication is done according to priority (e.g. where only 1 block out of 3 remains is higher priority than when only 2 out of 3 remain). Every time a DN heartbeats into the NN, it *may* be assigned some replication work according to some

Re: speed of replication for under replicated blocks by namenode

2014-05-16 Thread Abirami V
Hi Chandra, Please find the below link which will clear your doubt http://comments.gmane.org/gmane.comp.jakarta.lucene.hadoop.user/43045 Thanks, Abirami On Mon, May 12, 2014 at 10:58 PM, Ravi Prakash wrote: > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Hi Chandra! > > Replication i