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src/s/a/sahara-HEAD/sahara/plugins/vanilla/v2_3_0/versionhandler.py   sahara(Download)
    def start_cluster(self, cluster):
        nn = vu.get_namenode(cluster)
        run.format_namenode(nn)
        run.start_hadoop_process(nn, 'namenode')
 
        for snn in vu.get_secondarynamenodes(cluster):
            run.start_hadoop_process(snn, 'secondarynamenode')
 
        for dn in vu.get_datanodes(cluster):
            run.start_hadoop_process(dn, 'datanode')
 
        run.await_datanodes(cluster)

src/s/a/sahara-2014.1/sahara/plugins/vanilla/v2_3_0/versionhandler.py   sahara(Download)
    def start_cluster(self, cluster):
        nn = utils.get_namenode(cluster)
        run.format_namenode(nn)
        run.start_hadoop_process(nn, 'namenode')
 
        rm = utils.get_resourcemanager(cluster)
        run.start_yarn_process(rm, 'resourcemanager')
 
        for dn in utils.get_datanodes(cluster):
            run.start_hadoop_process(dn, 'datanode')