Hi Kevin, What do you mean by "current block count per DN"? I kept the standard settings.
fsck is telling me that I have 10893 titak blocks. Since I have 8 nodes, it's giving me 1361 blocks per node. It that what you are asking? JM 2013/1/27, Kevin O'dell <kevin.od...@cloudera.com>: > Hey JM, > > I suspect they are referring to the DN process only. It is important in > these discussion to talk about individual component memory usage. In > my experience most HBase clusters only need 1 - 2 GB of heap space for the > DN process. I am not a Map Reduce expert, but typically the actual TT > process only needs 1GB of memory then you control everything else through > max slots and child heap. What is your current block count per DN? > > On Sun, Jan 27, 2013 at 9:28 AM, Jean-Marc Spaggiari < > jean-m...@spaggiari.org> wrote: > >> Hi, >> >> I saw on another message that hadoop only need 1GB... >> >> Today, I have configured my nodes with 45% memory for HBase, 45% >> memory for Hadoop. The last 10% are for the OS. >> >> Should I move that with 1GB for Hadoop, 10% for the OS and the rest >> for HBase? Even if running MR jobs? >> >> Thanks, >> >> JM >> > > > > -- > Kevin O'Dell > Customer Operations Engineer, Cloudera >
