Hi Matt, Your understanding is right. You don't need YARN services running as long as you don't run any Map Reduce jobs(CSV Bulk Loading, Map Reduce , phoenix-pig) .
Regards Ravi On Mon, Mar 23, 2015 at 7:51 AM, Matthew Johnson <[email protected]> wrote: > Hi all, > > > > Currently when I start up my cluster, I use the packaged scripts for > starting up Hadoop (v2.6.0) and HBase (0.98.9-hadoop2). This results in the > following processes running: > > > > HADOOP: > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_namenode --- > org.apache.hadoop.hdfs.server.namenode.NameNode* > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_datanode --- > org.apache.hadoop.hdfs.server.datanode.DataNode* > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_secondarynamenode --- > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode* > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_resourcemanager --- > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager* > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_nodemanager --- > org.apache.hadoop.yarn.server.nodemanager.NodeManager* > > > > HBASE: > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_master --- > org.apache.hadoop.hbase.master.HMaster * > > *hadoop --- /usr/java/jre1.7.0_65/bin/java -Dproc_regionserver --- > org.apache.hadoop.hbase.regionserver.HRegionServer* > > > > My understanding is that the Hadoop processes “Resource Manager” and “Node > Manager” are part of Hadoop YARN (correct me if I’m wrong). If all I want > to do with my cluster is put/get/scan directly with HBase and > upsert/select/join with Phoenix, do I need to have YARN running? Does > Phoenix use the YARN framework for distributing parts of queries, for > example if I count the number of rows in a table? Or will it just scan > through and count rows directly in HBase? > > > > Thanks! > > Matt > > > > > > >
