def _validate_additional_ng_scaling(self, cluster, additional):
jt = utils.get_jobtracker(cluster)
scalable_processes = self._get_scalable_processes()
for ng_id in additional:
ng = self._get_by_id(cluster.node_groups, ng_id)
if not set(ng.node_processes).issubset(scalable_processes):
raise ex.NodeGroupCannotBeScaled(
ng.name, "Vanilla plugin cannot scale nodegroup"
" with processes: " + ' '.join(ng.node_processes))
if not jt and 'tasktracker' in ng.node_processes:
raise ex.NodeGroupCannotBeScaled(
ng.name, "Vanilla plugin cannot scale node group with "
"processes which have no master-processes run "
"in cluster")
def _validate_existing_ng_scaling(self, cluster, existing):
scalable_processes = self._get_scalable_processes()
dn_to_delete = 0
for ng in cluster.node_groups:
if ng.id in existing:
if ng.count > existing[ng.id] and "datanode" in \
ng.node_processes:
dn_to_delete += ng.count - existing[ng.id]
if not set(ng.node_processes).issubset(scalable_processes):
raise ex.NodeGroupCannotBeScaled(
ng.name, "Intel plugin cannot scale nodegroup"
" with processes: " +
' '.join(ng.node_processes))
def _validate_existing_ng_scaling(self, cluster, existing):
scalable_processes = self._get_scalable_processes()
dn_to_delete = 0
for ng in cluster.node_groups:
if ng.id in existing:
if ng.count > existing[ng.id] and "datanode" in \
ng.node_processes:
dn_to_delete += ng.count - existing[ng.id]
if not set(ng.node_processes).issubset(scalable_processes):
raise ex.NodeGroupCannotBeScaled(
ng.name, "Vanilla plugin cannot scale nodegroup"
" with processes: " + ' '.join(ng.node_processes))
dn_amount = len(utils.get_datanodes(cluster))
rep_factor = c_helper.determine_cluster_config(cluster,
"dfs.replication")
if dn_to_delete > 0 and dn_amount - dn_to_delete < rep_factor:
raise Exception("Vanilla plugin cannot shrink cluster because "
"it would be not enough nodes for replicas "
"(replication factor is %s )" % rep_factor)