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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.IndexShardRoutingTable;
import org.elasticsearch.cluster.routing.RoutingNodes;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.allocation.decider.ClusterRebalanceAllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.ThrottlingAllocationDecider;
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;
import static org.hamcrest.Matchers.not;
public class RoutingNodesIntegrityTests extends ESAllocationTestCase {
private final Logger logger = Loggers.getLogger(IndexBalanceTests.class);
public void testBalanceAllNodesStarted() {
AllocationService strategy = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_concurrent_recoveries", 10)
.put("cluster.routing.allocation.node_initial_primaries_recoveries", 10)
.put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always")
.put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build());
logger.info("Building initial routing table");
MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(3).numberOfReplicas(1))
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(3).numberOfReplicas(1)).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("Adding three node and performing rerouting");
clusterState = ClusterState.builder(clusterState)
.nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3"))).build();
RoutingNodes routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
// all shards are unassigned. so no inactive shards or primaries.
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(true));
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(true));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
logger.info("Another round of rebalancing");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())).build();
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
logger.info("Reroute, nothing should change");
ClusterState newState = strategy.reroute(clusterState, "reroute");
assertThat(newState, equalTo(clusterState));
logger.info("Start the more shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
}
public void testBalanceIncrementallyStartNodes() {
AllocationService strategy = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_concurrent_recoveries", 10)
.put("cluster.routing.allocation.node_initial_primaries_recoveries", 10)
.put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always")
.put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build());
logger.info("Building initial routing table");
MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(3).numberOfReplicas(1))
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(3).numberOfReplicas(1)).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("Adding one node and performing rerouting");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(newNode("node1"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("Add another node and perform rerouting, nothing will happen since primary not started");
clusterState = ClusterState.builder(clusterState)
.nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("Start the primary shard");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
logger.info("Reroute, nothing should change");
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("Start the backup shard");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
logger.info("Add another node and perform rerouting, nothing will happen since primary not started");
clusterState = ClusterState.builder(clusterState)
.nodes(DiscoveryNodes.builder(clusterState.nodes()).add(newNode("node3"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("Reroute, nothing should change");
ClusterState newState = strategy.reroute(clusterState, "reroute");
assertThat(newState, equalTo(clusterState));
logger.info("Start the backup shard");
routingNodes = clusterState.getRoutingNodes();
newState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
assertThat(newState, not(equalTo(clusterState)));
clusterState = newState;
routingNodes = clusterState.getRoutingNodes();
assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(3));
newState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
assertThat(newState, not(equalTo(clusterState)));
clusterState = newState;
routingNodes = clusterState.getRoutingNodes();
assertThat(clusterState.routingTable().index("test1").shards().size(), equalTo(3));
assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(4));
assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(4));
assertThat(routingNodes.node("node3").numberOfShardsWithState(STARTED), equalTo(4));
assertThat(routingNodes.node("node1").shardsWithState("test", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node2").shardsWithState("test", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node3").shardsWithState("test", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node1").shardsWithState("test1", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node2").shardsWithState("test1", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node3").shardsWithState("test1", STARTED).size(), equalTo(2));
}
public void testBalanceAllNodesStartedAddIndex() {
AllocationService strategy = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_concurrent_recoveries", 1)
.put("cluster.routing.allocation.node_initial_primaries_recoveries", 3)
.put(ThrottlingAllocationDecider.CLUSTER_ROUTING_ALLOCATION_NODE_CONCURRENT_OUTGOING_RECOVERIES_SETTING.getKey(), 10)
.put(ClusterRebalanceAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getKey(), "always")
.put("cluster.routing.allocation.cluster_concurrent_rebalance", -1).build());
logger.info("Building initial routing table");
MetaData metaData = MetaData.builder().put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(3).numberOfReplicas(1)).build();
RoutingTable initialRoutingTable = RoutingTable.builder().addAsNew(metaData.index("test")).build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(initialRoutingTable).build();
logger.info("Adding three node and performing rerouting");
clusterState = ClusterState.builder(clusterState)
.nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3"))).build();
RoutingNodes routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(true));
clusterState = strategy.reroute(clusterState, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(true));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
logger.info("Another round of rebalancing");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())).build();
ClusterState newState = strategy.reroute(clusterState, "reroute");
assertThat(newState, equalTo(clusterState));
routingNodes = clusterState.getRoutingNodes();
assertThat(routingNodes.node("node1").numberOfShardsWithState(INITIALIZING), equalTo(1));
assertThat(routingNodes.node("node2").numberOfShardsWithState(INITIALIZING), equalTo(1));
assertThat(routingNodes.node("node3").numberOfShardsWithState(INITIALIZING), equalTo(1));
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNodes.node("node3").numberOfShardsWithState(STARTED), equalTo(1));
logger.info("Reroute, nothing should change");
newState = strategy.reroute(clusterState, "reroute");
assertThat(newState, equalTo(clusterState));
logger.info("Start the more shards");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(2));
assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(2));
assertThat(routingNodes.node("node3").numberOfShardsWithState(STARTED), equalTo(2));
assertThat(routingNodes.node("node1").shardsWithState("test", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node2").shardsWithState("test", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node3").shardsWithState("test", STARTED).size(), equalTo(2));
logger.info("Add new index 3 shards 1 replica");
metaData = MetaData.builder(clusterState.metaData())
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)
.put(IndexMetaData.SETTING_NUMBER_OF_SHARDS, 3)
.put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, 1)
))
.build();
RoutingTable updatedRoutingTable = RoutingTable.builder(clusterState.routingTable())
.addAsNew(metaData.index("test1"))
.build();
clusterState = ClusterState.builder(clusterState).metaData(metaData).routingTable(updatedRoutingTable).build();
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(true));
assertThat(clusterState.routingTable().index("test1").shards().size(), equalTo(3));
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("Reroute, assign");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())).build();
newState = strategy.reroute(clusterState, "reroute");
assertThat(newState, equalTo(clusterState));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(true));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
logger.info("Reroute, start the primaries");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
logger.info("Reroute, start the replicas");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(4));
assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(4));
assertThat(routingNodes.node("node3").numberOfShardsWithState(STARTED), equalTo(4));
assertThat(routingNodes.node("node1").shardsWithState("test1", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node2").shardsWithState("test1", STARTED).size(), equalTo(2));
assertThat(routingNodes.node("node3").shardsWithState("test1", STARTED).size(), equalTo(2));
logger.info("kill one node");
IndexShardRoutingTable indexShardRoutingTable = clusterState.routingTable().index("test").shard(0);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes()).remove(indexShardRoutingTable.primaryShard().currentNodeId())).build();
clusterState = strategy.deassociateDeadNodes(clusterState, true, "reroute");
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
// replica got promoted to primary
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
logger.info("Start Recovering shards round 1");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(true));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
logger.info("Start Recovering shards round 2");
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
routingNodes = clusterState.getRoutingNodes();
assertThat(assertShardStats(routingNodes), equalTo(true));
assertThat(routingNodes.hasInactiveShards(), equalTo(false));
assertThat(routingNodes.hasInactivePrimaries(), equalTo(false));
assertThat(routingNodes.hasUnassignedPrimaries(), equalTo(false));
}
private boolean assertShardStats(RoutingNodes routingNodes) {
return RoutingNodes.assertShardStats(routingNodes);
}
}