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Posted to hdfs-dev@hadoop.apache.org by ch huang <ju...@gmail.com> on 2013/11/20 06:26:26 UTC

is block pool on NN or DN?

hi,all:
         i have a question about block pool,i read the code ,it seems block
pool is on DN,but NN also has a block pool manager to manage all
block pool,so the block pool also in NN?

RE: is block pool on NN or DN?

Posted by "Sirianni, Eric" <Er...@netapp.com>.

This blog post should clear it up:
http://hortonworks.com/blog/an-introduction-to-hdfs-federation/


-----Original Message-----
From: ch huang [mailto:justlooks@gmail.com] 
Sent: Wednesday, November 20, 2013 12:26 AM
To: hdfs-dev@hadoop.apache.org
Subject: is block pool on NN or DN?

hi,all:
         i have a question about block pool,i read the code ,it seems block
pool is on DN,but NN also has a block pool manager to manage all
block pool,so the block pool also in NN?