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* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.cluster.routing.allocation;
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.RoutingTable;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.settings.Settings;
import static java.util.Collections.singletonMap;
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.equalTo;
public class PreferLocalPrimariesToRelocatingPrimariesTests extends ESAllocationTestCase {
public void testPreferLocalPrimaryAllocationOverFiltered() {
int concurrentRecoveries = randomIntBetween(1, 10);
int primaryRecoveries = randomIntBetween(1, 10);
int numberOfShards = randomIntBetween(5, 20);
int totalNumberOfShards = numberOfShards * 2;
logger.info("create an allocation with [{}] initial primary recoveries and [{}] concurrent recoveries", primaryRecoveries, concurrentRecoveries);
AllocationService strategy = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_concurrent_recoveries", concurrentRecoveries)
.put("cluster.routing.allocation.node_initial_primaries_recoveries", primaryRecoveries)
.build());
logger.info("create 2 indices with [{}] no replicas, and wait till all are allocated", numberOfShards);
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(numberOfShards).numberOfReplicas(0))
.put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(numberOfShards).numberOfReplicas(0))
.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("adding two nodes and performing rerouting till all are allocated");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.add(newNode("node1")).add(newNode("node2"))).build();
clusterState = strategy.reroute(clusterState, "reroute");
while (!clusterState.getRoutingNodes().shardsWithState(INITIALIZING).isEmpty()) {
clusterState = strategy.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
}
logger.info("remove one of the nodes and apply filter to move everything from another node");
metaData = MetaData.builder()
.put(IndexMetaData.builder(clusterState.metaData().index("test1")).settings(settings(Version.CURRENT)
.put("index.number_of_shards", numberOfShards)
.put("index.number_of_replicas", 0)
.put("index.routing.allocation.exclude._name", "node2")
.build()))
.put(IndexMetaData.builder(clusterState.metaData().index("test2")).settings(settings(Version.CURRENT)
.put("index.number_of_shards", numberOfShards)
.put("index.number_of_replicas", 0)
.put("index.routing.allocation.exclude._name", "node2")
.build()))
.build();
clusterState = ClusterState.builder(clusterState).metaData(metaData).nodes(DiscoveryNodes.builder(clusterState.nodes()).remove("node1")).build();
clusterState = strategy.deassociateDeadNodes(clusterState, true, "reroute");
logger.info("[{}] primaries should be still started but [{}] other primaries should be unassigned", numberOfShards, numberOfShards);
assertThat(clusterState.getRoutingNodes().shardsWithState(STARTED).size(), equalTo(numberOfShards));
assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(0));
assertThat(clusterState.routingTable().shardsWithState(UNASSIGNED).size(), equalTo(numberOfShards));
logger.info("start node back up");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node1", singletonMap("tag1", "value1")))).build();
clusterState = strategy.reroute(clusterState, "reroute");
while (clusterState.getRoutingNodes().shardsWithState(STARTED).size() < totalNumberOfShards) {
int localInitializations = 0;
int relocatingInitializations = 0;
for (ShardRouting routing : clusterState.getRoutingNodes().shardsWithState(INITIALIZING)) {
if (routing.relocatingNodeId() == null) {
localInitializations++;
} else {
relocatingInitializations++;
}
}
int needToInitialize = totalNumberOfShards - clusterState.getRoutingNodes().shardsWithState(STARTED).size() - clusterState.getRoutingNodes().shardsWithState(RELOCATING).size();
logger.info("local initializations: [{}], relocating: [{}], need to initialize: {}", localInitializations, relocatingInitializations, needToInitialize);
assertThat(localInitializations, equalTo(Math.min(primaryRecoveries, needToInitialize)));
clusterState = startRandomInitializingShard(clusterState, strategy);
}
}
}