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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.cluster.routing.allocation;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ESAllocationTestCase;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.cluster.routing.RoutingNode;
import org.elasticsearch.cluster.routing.RoutingNodes;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.allocation.decider.ClusterRebalanceAllocationDecider;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
import static org.elasticsearch.cluster.routing.ShardRoutingState.STARTED;
import static org.hamcrest.Matchers.equalTo;
public class FailedNodeRoutingTests extends ESAllocationTestCase {
private final Logger logger = Loggers.getLogger(FailedNodeRoutingTests.class);
public void testSimpleFailedNodeTest() {
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.ALWAYS.toString()).build());
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1))
.put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1))
.build();
RoutingTable initialRoutingTable = RoutingTable.builder()
.addAsNew(metaData.index("test1"))
.addAsNew(metaData.index("test2"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
logger.info("start 4 nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3")).add(newNode("node4"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("start all the primary shards, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
logger.info("start the replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNodes.node("node3").numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNodes.node("node4").numberOfShardsWithState(STARTED), equalTo(1));
logger.info("remove 2 nodes where primaries are allocated, reroute");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.remove(clusterState.routingTable().index("test1").shard(0).primaryShard().currentNodeId())
.remove(clusterState.routingTable().index("test2").shard(0).primaryShard().currentNodeId())
)
.build();
clusterState = strategy.deassociateDeadNodes(clusterState, true, "reroute");
routingNodes = clusterState.getRoutingNodes();
for (RoutingNode routingNode : routingNodes) {
assertThat(routingNode.numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNode.numberOfShardsWithState(INITIALIZING), equalTo(1));
}
}
}