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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.cluster.routing.allocation;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.node.DiscoveryNode;
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.ShardRoutingState;
import org.elasticsearch.cluster.routing.allocation.decider.ClusterRebalanceAllocationDecider;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.test.ESAllocationTestCase;
import org.elasticsearch.test.VersionUtils;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static org.elasticsearch.cluster.routing.ShardRoutingState.*;
import static org.elasticsearch.common.settings.Settings.settingsBuilder;
import static org.elasticsearch.test.VersionUtils.randomVersion;
import static org.hamcrest.Matchers.*;
/**
*
*/
public class NodeVersionAllocationDeciderTests extends ESAllocationTestCase {
private final ESLogger logger = Loggers.getLogger(NodeVersionAllocationDeciderTests.class);
public void testDoNotAllocateFromPrimary() {
AllocationService strategy = createAllocationService(settingsBuilder()
.put("cluster.routing.allocation.concurrent_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(5).numberOfReplicas(2))
.build();
RoutingTable routingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable).build();
assertThat(routingTable.index("test").shards().size(), equalTo(5));
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).shards().get(0).state(), equalTo(UNASSIGNED));
assertThat(routingTable.index("test").shard(i).shards().get(1).state(), equalTo(UNASSIGNED));
assertThat(routingTable.index("test").shard(i).shards().get(2).state(), equalTo(UNASSIGNED));
assertThat(routingTable.index("test").shard(i).shards().get(0).currentNodeId(), nullValue());
assertThat(routingTable.index("test").shard(i).shards().get(1).currentNodeId(), nullValue());
assertThat(routingTable.index("test").shard(i).shards().get(2).currentNodeId(), nullValue());
}
logger.info("start two nodes and fully start the shards");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().put(newNode("node1")).put(newNode("node2"))).build();
RoutingTable prevRoutingTable = routingTable;
routingTable = strategy.reroute(clusterState, "reroute").routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(2));
}
logger.info("start all the primary shards, replicas will start initializing");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
prevRoutingTable = routingTable;
routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(INITIALIZING).size(), equalTo(1));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(1));
}
routingNodes = clusterState.getRoutingNodes();
prevRoutingTable = routingTable;
routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(1));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(1));
}
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.put(newNode("node3", VersionUtils.getPreviousVersion())))
.build();
prevRoutingTable = routingTable;
routingTable = strategy.reroute(clusterState, "reroute").routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(1));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(1));
}
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.put(newNode("node4")))
.build();
prevRoutingTable = routingTable;
routingTable = strategy.reroute(clusterState, "reroute").routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(1));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(INITIALIZING).size(), equalTo(1));
}
routingNodes = clusterState.getRoutingNodes();
prevRoutingTable = routingTable;
routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.getRoutingNodes();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(2));
}
}
public void testRandom() {
AllocationService service = createAllocationService(settingsBuilder()
.put("cluster.routing.allocation.concurrent_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.Builder builder = MetaData.builder();
RoutingTable.Builder rtBuilder = RoutingTable.builder();
int numIndices = between(1, 20);
for (int i = 0; i < numIndices; i++) {
builder.put(IndexMetaData.builder("test_" + i).settings(settings(Version.CURRENT)).numberOfShards(between(1, 5)).numberOfReplicas(between(0, 2)));
}
MetaData metaData = builder.build();
for (int i = 0; i < numIndices; i++) {
rtBuilder.addAsNew(metaData.index("test_" + i));
}
RoutingTable routingTable = rtBuilder.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable).build();
assertThat(routingTable.shardsWithState(UNASSIGNED).size(), equalTo(routingTable.allShards().size()));
List<DiscoveryNode> nodes = new ArrayList<>();
int nodeIdx = 0;
int iters = scaledRandomIntBetween(10, 100);
for (int i = 0; i < iters; i++) {
DiscoveryNodes.Builder nodesBuilder = DiscoveryNodes.builder();
int numNodes = between(1, 20);
if (nodes.size() > numNodes) {
Collections.shuffle(nodes, random());
nodes = nodes.subList(0, numNodes);
} else {
for (int j = nodes.size(); j < numNodes; j++) {
if (frequently()) {
nodes.add(newNode("node" + (nodeIdx++), randomBoolean() ? VersionUtils.getPreviousVersion() : Version.CURRENT));
} else {
nodes.add(newNode("node" + (nodeIdx++), randomVersion(random())));
}
}
}
for (DiscoveryNode node : nodes) {
nodesBuilder.put(node);
}
clusterState = ClusterState.builder(clusterState).nodes(nodesBuilder).build();
clusterState = stabilize(clusterState, service);
}
}
public void testRollingRestart() {
AllocationService service = createAllocationService(settingsBuilder()
.put("cluster.routing.allocation.concurrent_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(5).numberOfReplicas(2))
.build();
RoutingTable routingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable).build();
assertThat(routingTable.index("test").shards().size(), equalTo(5));
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).shards().get(0).state(), equalTo(UNASSIGNED));
assertThat(routingTable.index("test").shard(i).shards().get(1).state(), equalTo(UNASSIGNED));
assertThat(routingTable.index("test").shard(i).shards().get(2).state(), equalTo(UNASSIGNED));
assertThat(routingTable.index("test").shard(i).shards().get(0).currentNodeId(), nullValue());
assertThat(routingTable.index("test").shard(i).shards().get(1).currentNodeId(), nullValue());
assertThat(routingTable.index("test").shard(i).shards().get(2).currentNodeId(), nullValue());
}
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.put(newNode("old0", VersionUtils.getPreviousVersion()))
.put(newNode("old1", VersionUtils.getPreviousVersion()))
.put(newNode("old2", VersionUtils.getPreviousVersion()))).build();
clusterState = stabilize(clusterState, service);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.put(newNode("old0", VersionUtils.getPreviousVersion()))
.put(newNode("old1", VersionUtils.getPreviousVersion()))
.put(newNode("new0"))).build();
clusterState = stabilize(clusterState, service);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.put(newNode("node0", VersionUtils.getPreviousVersion()))
.put(newNode("new1"))
.put(newNode("new0"))).build();
clusterState = stabilize(clusterState, service);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.put(newNode("new2"))
.put(newNode("new1"))
.put(newNode("new0"))).build();
clusterState = stabilize(clusterState, service);
routingTable = clusterState.routingTable();
for (int i = 0; i < routingTable.index("test").shards().size(); i++) {
assertThat(routingTable.index("test").shard(i).shards().size(), equalTo(3));
assertThat(routingTable.index("test").shard(i).shards().get(0).state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).shards().get(1).state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).shards().get(2).state(), equalTo(STARTED));
assertThat(routingTable.index("test").shard(i).shards().get(0).currentNodeId(), notNullValue());
assertThat(routingTable.index("test").shard(i).shards().get(1).currentNodeId(), notNullValue());
assertThat(routingTable.index("test").shard(i).shards().get(2).currentNodeId(), notNullValue());
}
}
private ClusterState stabilize(ClusterState clusterState, AllocationService service) {
logger.trace("RoutingNodes: {}", clusterState.getRoutingNodes().prettyPrint());
RoutingTable routingTable = service.reroute(clusterState, "reroute").routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
RoutingNodes routingNodes = clusterState.getRoutingNodes();
assertRecoveryNodeVersions(routingNodes);
logger.info("complete rebalancing");
RoutingTable prev = routingTable;
boolean stable = false;
for (int i = 0; i < 1000; i++) { // at most 200 iters - this should be enough for all tests
logger.trace("RoutingNodes: {}", clusterState.getRoutingNodes().prettyPrint());
routingTable = service.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.getRoutingNodes();
if (stable = (routingTable == prev)) {
break;
}
assertRecoveryNodeVersions(routingNodes);
prev = routingTable;
}
logger.info("stabilized success [{}]", stable);
assertThat(stable, is(true));
return clusterState;
}
private final void assertRecoveryNodeVersions(RoutingNodes routingNodes) {
logger.trace("RoutingNodes: {}", routingNodes.prettyPrint());
List<ShardRouting> mutableShardRoutings = routingNodes.shardsWithState(ShardRoutingState.RELOCATING);
for (ShardRouting r : mutableShardRoutings) {
String toId = r.relocatingNodeId();
String fromId = r.currentNodeId();
assertThat(fromId, notNullValue());
assertThat(toId, notNullValue());
logger.trace("From: " + fromId + " with Version: " + routingNodes.node(fromId).node().version() + " to: " + toId + " with Version: " + routingNodes.node(toId).node().version());
assertTrue(routingNodes.node(toId).node().version().onOrAfter(routingNodes.node(fromId).node().version()));
}
mutableShardRoutings = routingNodes.shardsWithState(ShardRoutingState.INITIALIZING);
for (ShardRouting r : mutableShardRoutings) {
if (r.initializing() && r.relocatingNodeId() == null && !r.primary()) {
ShardRouting primary = routingNodes.activePrimary(r);
assertThat(primary, notNullValue());
String fromId = primary.currentNodeId();
String toId = r.currentNodeId();
logger.trace("From: " + fromId + " with Version: " + routingNodes.node(fromId).node().version() + " to: " + toId + " with Version: " + routingNodes.node(toId).node().version());
assertTrue(routingNodes.node(toId).node().version().onOrAfter(routingNodes.node(fromId).node().version()));
}
}
}
}
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