def test_get_config_value(self, cond_get_cluster):
cluster = self._get_fake_cluster()
cond_get_cluster.return_value = cluster
self.assertEqual(
c_h.get_config_value('HDFS', 'fs.default.name', cluster),
'hdfs://inst1:8020')
self.assertEqual(c_h.get_config_value('HDFS', 'spam', cluster), 'eggs')
self.assertEqual(
c_h.get_config_value('HDFS', 'dfs.safemode.extension'), 30000)
self.assertRaises(e.ConfigurationError, c_h.get_config_value,
'MapReduce', 'spam', cluster)
def test_get_config_value(self, cond_get_cluster):
cluster = self._get_fake_cluster()
cond_get_cluster.return_value = cluster
self.assertEqual(
c_h.get_config_value('HDFS', 'fs.default.name', cluster),
'hdfs://inst1:8020')
self.assertEqual(
c_h.get_config_value('HDFS', 'spam', cluster), 'eggs')
self.assertEqual(
c_h.get_config_value('HDFS', 'dfs.safemode.extension'), 30000)
self.assertRaises(RuntimeError,
c_h.get_config_value,
'MapReduce', 'spam', 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,
_("Vanilla plugin cannot scale nodegroup" " with processes: %s") % " ".join(ng.node_processes),
)
dn_amount = len(vu.get_datanodes(cluster))
rep_factor = c_helper.get_config_value("HDFS", "dfs.replication", cluster)
if dn_to_delete > 0 and dn_amount - dn_to_delete < rep_factor:
raise ex.ClusterCannotBeScaled(
cluster.name,
_(
"Vanilla plugin cannot shrink cluster because "
"it would be not enough nodes for replicas "
"(replication factor is %s)"
)
% rep_factor,
)
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(vu.get_datanodes(cluster))
rep_factor = c_helper.get_config_value('HDFS', 'dfs.replication',
cluster)
if dn_to_delete > 0 and dn_amount - dn_to_delete < rep_factor:
raise ex.ClusterCannotBeScaled(
cluster.name, "Vanilla plugin cannot shrink cluster because "
"it would be not enough nodes for replicas "
"(replication factor is %s)" % rep_factor)
