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* You may obtain a copy of the License at
*
* 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.RoutingNodes;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.UnassignedInfo;
import org.elasticsearch.cluster.routing.allocation.decider.ClusterRebalanceAllocationDecider;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.test.gateway.TestGatewayAllocator;
import java.util.concurrent.atomic.AtomicBoolean;
import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
import static org.elasticsearch.cluster.routing.ShardRoutingState.RELOCATING;
import static org.elasticsearch.cluster.routing.ShardRoutingState.STARTED;
import static org.elasticsearch.cluster.routing.ShardRoutingState.UNASSIGNED;
import static org.hamcrest.Matchers.anyOf;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.not;
public class ClusterRebalanceRoutingTests extends ESAllocationTestCase {
private final Logger logger = Loggers.getLogger(ClusterRebalanceRoutingTests.class);
public void testAlways() {
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 two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test1, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
// assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start the test1 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("now, start 1 more node, check that rebalancing will happen (for test1) because we set it to always");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3")))
.build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node3").size(), equalTo(1));
assertThat(routingNodes.node("node3").iterator().next().shardId().getIndex().getName(), equalTo("test1"));
}
public void testClusterPrimariesActive1() {
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_PRIMARIES_ACTIVE.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 two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test1, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start the test1 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test2, replicas will start initializing");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
logger.info("now, start 1 more node, check that rebalancing happen (for test1) because we set it to primaries_active");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3")))
.build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node3").size(), equalTo(1));
assertThat(routingNodes.node("node3").iterator().next().shardId().getIndex().getName(), equalTo("test1"));
}
public void testClusterPrimariesActive2() {
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_PRIMARIES_ACTIVE.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 two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test1, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start the test1 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("now, start 1 more node, check that rebalancing will not happen (for test1) because we set it to primaries_active");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3")))
.build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node3").isEmpty(), equalTo(true));
}
public void testClusterAllActive1() {
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_ALL_ACTIVE.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 two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test1, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start the test1 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test2, replicas will start initializing");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
logger.info("start the test2 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
logger.info("now, start 1 more node, check that rebalancing happen (for test1) because we set it to all_active");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3")))
.build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node3").size(), equalTo(1));
assertThat(routingNodes.node("node3").iterator().next().shardId().getIndex().getName(), anyOf(equalTo("test1"), equalTo("test2")));
}
public void testClusterAllActive2() {
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_ALL_ACTIVE.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 two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test1, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start the test1 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("now, start 1 more node, check that rebalancing will not happen (for test1) because we set it to all_active");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3")))
.build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node3").isEmpty(), equalTo(true));
}
public void testClusterAllActive3() {
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.INDICES_ALL_ACTIVE.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 two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test1, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start the test1 replica shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(UNASSIGNED));
}
logger.info("start all the primary shards for test2, replicas will start initializing");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test2", INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test1").shard(i).replicaShards().get(0).state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test2").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test2").shard(i).shards().size(), equalTo(2));
assertThat(clusterState.routingTable().index("test2").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test2").shard(i).replicaShards().get(0).state(), equalTo(INITIALIZING));
}
logger.info("now, start 1 more node, check that rebalancing will not happen (for test1) because we set it to all_active");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3")))
.build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node3").isEmpty(), equalTo(true));
}
public void testRebalanceWithIgnoredUnassignedShards() {
final AtomicBoolean allocateTest1 = new AtomicBoolean(false);
AllocationService strategy = createAllocationService(Settings.EMPTY, new TestGatewayAllocator() {
@Override
public void allocateUnassigned(RoutingAllocation allocation) {
if (allocateTest1.get() == false) {
RoutingNodes.UnassignedShards unassigned = allocation.routingNodes().unassigned();
RoutingNodes.UnassignedShards.UnassignedIterator iterator = unassigned.iterator();
while (iterator.hasNext()) {
ShardRouting next = iterator.next();
if ("test1".equals(next.index().getName())) {
iterator.removeAndIgnore(UnassignedInfo.AllocationStatus.NO_ATTEMPT, allocation.changes());
}
}
}
super.allocateUnassigned(allocation);
}
});
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(2).numberOfReplicas(0))
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(2).numberOfReplicas(0))
.build();
RoutingTable initialRoutingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.addAsNew(metaData.index("test1"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
logger.info("start two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
}
logger.debug("start all the primary shards for test");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test", INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
}
logger.debug("now, start 1 more node, check that rebalancing will not happen since we unassigned shards");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node2")))
.build();
logger.debug("reroute and check that nothing has changed");
ClusterState resultingState = strategy.reroute(clusterState, "reroute");
assertThat(resultingState, equalTo(clusterState));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(UNASSIGNED));
}
logger.debug("now set allocateTest1 to true and reroute we should see the [test1] index initializing");
allocateTest1.set(true);
resultingState = strategy.reroute(clusterState, "reroute");
assertThat(resultingState, not(equalTo(clusterState)));
clusterState = resultingState;
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(INITIALIZING));
}
logger.debug("now start initializing shards and expect exactly one rebalance from node1 to node 2 since index [test] is all on node1");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test1", INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(STARTED));
}
int numStarted = 0;
int numRelocating = 0;
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
if (clusterState.routingTable().index("test").shard(i).primaryShard().state() == STARTED) {
numStarted++;
} else if (clusterState.routingTable().index("test").shard(i).primaryShard().state() == RELOCATING) {
numRelocating++;
}
}
assertEquals(numStarted, 1);
assertEquals(numRelocating, 1);
}
public void testRebalanceWhileShardFetching() {
final AtomicBoolean hasFetches = new AtomicBoolean(true);
AllocationService strategy = createAllocationService(Settings.builder().put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(),
ClusterRebalanceAllocationDecider.ClusterRebalanceType.ALWAYS.toString()).build(), new TestGatewayAllocator() {
@Override
public void allocateUnassigned(RoutingAllocation allocation) {
if (hasFetches.get()) {
allocation.setHasPendingAsyncFetch();
}
super.allocateUnassigned(allocation);
}
});
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(2).numberOfReplicas(0))
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT).put(IndexMetaData.INDEX_ROUTING_EXCLUDE_GROUP_SETTING.getKey() + "_id", "node1,node2")).numberOfShards(2).numberOfReplicas(0))
.build();
// we use a second index here (test1) that never gets assigned otherwise allocateUnassigned is never called if we don't have unassigned shards.
RoutingTable initialRoutingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.addAsNew(metaData.index("test1"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
logger.info("start two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
}
logger.debug("start all the primary shards for test");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState("test", INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
}
logger.debug("now, start 1 more node, check that rebalancing will not happen since we have shard sync going on");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node2")))
.build();
logger.debug("reroute and check that nothing has changed");
ClusterState resultState = strategy.reroute(clusterState, "reroute");
assertThat(resultState, equalTo(clusterState));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
}
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(UNASSIGNED));
}
logger.debug("now set hasFetches to true and reroute we should now see exactly one relocating shard");
hasFetches.set(false);
resultState = strategy.reroute(clusterState, "reroute");
assertThat(resultState, not(equalTo(clusterState)));
clusterState = resultState;
int numStarted = 0;
int numRelocating = 0;
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(1));
if (clusterState.routingTable().index("test").shard(i).primaryShard().state() == STARTED) {
numStarted++;
} else if (clusterState.routingTable().index("test").shard(i).primaryShard().state() == RELOCATING) {
numRelocating++;
}
}
for (int i = 0; i < clusterState.routingTable().index("test1").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test1").shard(i).shards().size(), equalTo(1));
assertThat(clusterState.routingTable().index("test1").shard(i).primaryShard().state(), equalTo(UNASSIGNED));
}
assertEquals(numStarted, 1);
assertEquals(numRelocating, 1);
}
}