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 <ravi...@ymail.com> wrote: > > -----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 criteria. See > dfs.namenode.replication.work.multiplier.per.iteration . > The list of blocks that need to be replicated is calculated once every > dfs.namenode.replication.interval > > HTH > Ravi > > On 05/11/14 07:20, chandra kant wrote: > > 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 > > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQIcBAEBAgAGBQJTcbSfAAoJEGunL/HJl4XeL+AP/185/Sn72CH8RO67Z2eSUmSY > WjUhaZ1hs9yGHjlxS/tIm06QLl/ftvDaYmMI9Es4rpMfZqrYfwr6lMUVvDFRKyKO > 5J+5Z9WhmMBMWkR5M707B5rY2TvCMUgnbQITZT9gA5XPwh1N/wiiDweoFNOGnxaw > yQuunzkEwyFiFFHlQuH9PyQeHTUu/enYpRM7ILEMimYZOufXvQ8r34ye0EqGQwJo > y7HsOvlT45qIfQPVuZ7oYgu1AWDxY/5nu1A57XFRIdbZjpYBoJYtKlcUSDq9Tfvc > H+5F+7pl+6gf2UTNKNUz3ZqbuRc48Ex85lp/lq2wbUQcNgQ81bRsMv1opyliYP1R > 6Eeaa1x7KicxpQZvIsYtjCQHXn+HFTqRw7oKEAEe8cO2YAGFgj1uGAwYK7elmNoq > 79JXLMs7PTj5PxvwgbfQgWS9Ec7JPwdebM9jBRgi/EdH5mG5liXPC5D7/P4j03Hu > ZN9mXyQhxVAwYJL5Hm29Gk1vq69NkUwXmYhjfjEDYGaDyakFT7Cboyh2JHJZm08B > TDXzK2i0plv9G75I5Dk+4zLJpPk/EeLQTGjoV/xI9Pc4TMFr8e5sDPcZCxM8/D68 > X9OI0Qx1HCC717jrYZ1JpTxMSnh5JBnHoz/rpqx4HGrL/nQh5lM1oq4OFUFgNwv8 > TR0Tvaalk119g037o1qm > =RCPv > -----END PGP SIGNATURE----- > >
