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*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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package org.elasticsearch.cluster.routing.allocation;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ESAllocationTestCase;
import org.elasticsearch.cluster.EmptyClusterInfoService;
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.AllocationId;
import org.elasticsearch.cluster.routing.IndexRoutingTable;
import org.elasticsearch.cluster.routing.IndexShardRoutingTable;
import org.elasticsearch.cluster.routing.RecoverySource.SnapshotRecoverySource;
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.TestShardRouting;
import org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.command.AllocationCommands;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDeciders;
import org.elasticsearch.cluster.routing.allocation.decider.ClusterRebalanceAllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.NodeVersionAllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.ReplicaAfterPrimaryActiveAllocationDecider;
import org.elasticsearch.common.UUIDs;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.set.Sets;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.snapshots.Snapshot;
import org.elasticsearch.snapshots.SnapshotId;
import org.elasticsearch.test.VersionUtils;
import org.elasticsearch.test.gateway.TestGatewayAllocator;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import static java.util.Collections.emptyMap;
import static java.util.Collections.shuffle;
import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
import static org.elasticsearch.cluster.routing.ShardRoutingState.STARTED;
import static org.elasticsearch.cluster.routing.ShardRoutingState.UNASSIGNED;
import static org.elasticsearch.test.VersionUtils.randomVersion;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.notNullValue;
import static org.hamcrest.Matchers.nullValue;
public class NodeVersionAllocationDeciderTests extends ESAllocationTestCase {
private final Logger logger = Loggers.getLogger(NodeVersionAllocationDeciderTests.class);
public void testDoNotAllocateFromPrimary() {
AllocationService strategy = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_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();
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();
assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(5));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(3));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).state(), equalTo(UNASSIGNED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).state(), equalTo(UNASSIGNED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(2).state(), equalTo(UNASSIGNED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).currentNodeId(), nullValue());
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).currentNodeId(), nullValue());
assertThat(clusterState.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().add(newNode("node1")).add(newNode("node2"))).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(3));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(INITIALIZING));
assertThat(clusterState.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();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(3));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(INITIALIZING).size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(1));
}
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(3));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(1));
}
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node3", VersionUtils.getPreviousVersion())))
.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(3));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(UNASSIGNED).size(), equalTo(1));
}
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.add(newNode("node4")))
.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(3));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(1));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(INITIALIZING).size(), equalTo(1));
}
routingNodes = clusterState.getRoutingNodes();
clusterState = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(3));
assertThat(clusterState.routingTable().index("test").shard(i).primaryShard().state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).replicaShardsWithState(STARTED).size(), equalTo(2));
}
}
public void testRandom() {
AllocationService service = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_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.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).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) {
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.add(node);
}
clusterState = ClusterState.builder(clusterState).nodes(nodesBuilder).build();
clusterState = stabilize(clusterState, service);
}
}
public void testRollingRestart() {
AllocationService service = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_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.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).metaData(metaData).routingTable(routingTable).build();
assertThat(clusterState.routingTable().index("test").shards().size(), equalTo(5));
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(3));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).state(), equalTo(UNASSIGNED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).state(), equalTo(UNASSIGNED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(2).state(), equalTo(UNASSIGNED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).currentNodeId(), nullValue());
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).currentNodeId(), nullValue());
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(2).currentNodeId(), nullValue());
}
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.add(newNode("old0", VersionUtils.getPreviousVersion()))
.add(newNode("old1", VersionUtils.getPreviousVersion()))
.add(newNode("old2", VersionUtils.getPreviousVersion()))).build();
clusterState = stabilize(clusterState, service);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.add(newNode("old0", VersionUtils.getPreviousVersion()))
.add(newNode("old1", VersionUtils.getPreviousVersion()))
.add(newNode("new0"))).build();
clusterState = stabilize(clusterState, service);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.add(newNode("node0", VersionUtils.getPreviousVersion()))
.add(newNode("new1"))
.add(newNode("new0"))).build();
clusterState = stabilize(clusterState, service);
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.add(newNode("new2"))
.add(newNode("new1"))
.add(newNode("new0"))).build();
clusterState = stabilize(clusterState, service);
for (int i = 0; i < clusterState.routingTable().index("test").shards().size(); i++) {
assertThat(clusterState.routingTable().index("test").shard(i).shards().size(), equalTo(3));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(2).state(), equalTo(STARTED));
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(0).currentNodeId(), notNullValue());
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(1).currentNodeId(), notNullValue());
assertThat(clusterState.routingTable().index("test").shard(i).shards().get(2).currentNodeId(), notNullValue());
}
}
public void testRebalanceDoesNotAllocatePrimaryAndReplicasOnDifferentVersionNodes() {
ShardId shard1 = new ShardId("test1", "_na_", 0);
ShardId shard2 = new ShardId("test2", "_na_", 0);
final DiscoveryNode newNode = new DiscoveryNode("newNode", buildNewFakeTransportAddress(), emptyMap(),
MASTER_DATA_ROLES, Version.CURRENT);
final DiscoveryNode oldNode1 = new DiscoveryNode("oldNode1", buildNewFakeTransportAddress(), emptyMap(),
MASTER_DATA_ROLES, VersionUtils.getPreviousVersion());
final DiscoveryNode oldNode2 = new DiscoveryNode("oldNode2", buildNewFakeTransportAddress(), emptyMap(),
MASTER_DATA_ROLES, VersionUtils.getPreviousVersion());
AllocationId allocationId1P = AllocationId.newInitializing();
AllocationId allocationId1R = AllocationId.newInitializing();
AllocationId allocationId2P = AllocationId.newInitializing();
AllocationId allocationId2R = AllocationId.newInitializing();
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder(shard1.getIndexName()).settings(settings(Version.CURRENT).put(Settings.EMPTY)).numberOfShards(1).numberOfReplicas(1).putInSyncAllocationIds(0, Sets.newHashSet(allocationId1P.getId(), allocationId1R.getId())))
.put(IndexMetaData.builder(shard2.getIndexName()).settings(settings(Version.CURRENT).put(Settings.EMPTY)).numberOfShards(1).numberOfReplicas(1).putInSyncAllocationIds(0, Sets.newHashSet(allocationId2P.getId(), allocationId2R.getId())))
.build();
RoutingTable routingTable = RoutingTable.builder()
.add(IndexRoutingTable.builder(shard1.getIndex())
.addIndexShard(new IndexShardRoutingTable.Builder(shard1)
.addShard(TestShardRouting.newShardRouting(shard1.getIndexName(), shard1.getId(), newNode.getId(), null, true, ShardRoutingState.STARTED, allocationId1P))
.addShard(TestShardRouting.newShardRouting(shard1.getIndexName(), shard1.getId(), oldNode1.getId(), null, false, ShardRoutingState.STARTED, allocationId1R))
.build())
)
.add(IndexRoutingTable.builder(shard2.getIndex())
.addIndexShard(new IndexShardRoutingTable.Builder(shard2)
.addShard(TestShardRouting.newShardRouting(shard2.getIndexName(), shard2.getId(), newNode.getId(), null, true, ShardRoutingState.STARTED, allocationId2P))
.addShard(TestShardRouting.newShardRouting(shard2.getIndexName(), shard2.getId(), oldNode1.getId(), null, false, ShardRoutingState.STARTED, allocationId2R))
.build())
)
.build();
ClusterState state = ClusterState.builder(org.elasticsearch.cluster.ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY))
.metaData(metaData)
.routingTable(routingTable)
.nodes(DiscoveryNodes.builder().add(newNode).add(oldNode1).add(oldNode2)).build();
AllocationDeciders allocationDeciders = new AllocationDeciders(Settings.EMPTY, Collections.singleton(new NodeVersionAllocationDecider(Settings.EMPTY)));
AllocationService strategy = new MockAllocationService(Settings.EMPTY,
allocationDeciders,
new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), EmptyClusterInfoService.INSTANCE);
state = strategy.reroute(state, new AllocationCommands(), true, false).getClusterState();
// the two indices must stay as is, the replicas cannot move to oldNode2 because versions don't match
assertThat(state.routingTable().index(shard2.getIndex()).shardsWithState(ShardRoutingState.RELOCATING).size(), equalTo(0));
assertThat(state.routingTable().index(shard1.getIndex()).shardsWithState(ShardRoutingState.RELOCATING).size(), equalTo(0));
}
public void testRestoreDoesNotAllocateSnapshotOnOlderNodes() {
final DiscoveryNode newNode = new DiscoveryNode("newNode", buildNewFakeTransportAddress(), emptyMap(),
MASTER_DATA_ROLES, Version.CURRENT);
final DiscoveryNode oldNode1 = new DiscoveryNode("oldNode1", buildNewFakeTransportAddress(), emptyMap(),
MASTER_DATA_ROLES, VersionUtils.getPreviousVersion());
final DiscoveryNode oldNode2 = new DiscoveryNode("oldNode2", buildNewFakeTransportAddress(), emptyMap(),
MASTER_DATA_ROLES, VersionUtils.getPreviousVersion());
int numberOfShards = randomIntBetween(1, 3);
final IndexMetaData.Builder indexMetaData = IndexMetaData.builder("test").settings(settings(Version.CURRENT))
.numberOfShards(numberOfShards).numberOfReplicas(randomIntBetween(0, 3));
for (int i = 0; i < numberOfShards; i++) {
indexMetaData.putInSyncAllocationIds(i, Collections.singleton("_test_"));
}
MetaData metaData = MetaData.builder().put(indexMetaData).build();
ClusterState state = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY))
.metaData(metaData)
.routingTable(RoutingTable.builder().addAsRestore(metaData.index("test"),
new SnapshotRecoverySource(new Snapshot("rep1", new SnapshotId("snp1", UUIDs.randomBase64UUID())),
Version.CURRENT, "test")).build())
.nodes(DiscoveryNodes.builder().add(newNode).add(oldNode1).add(oldNode2)).build();
AllocationDeciders allocationDeciders = new AllocationDeciders(Settings.EMPTY, Arrays.asList(
new ReplicaAfterPrimaryActiveAllocationDecider(Settings.EMPTY),
new NodeVersionAllocationDecider(Settings.EMPTY)));
AllocationService strategy = new MockAllocationService(Settings.EMPTY,
allocationDeciders,
new TestGatewayAllocator(), new BalancedShardsAllocator(Settings.EMPTY), EmptyClusterInfoService.INSTANCE);
state = strategy.reroute(state, new AllocationCommands(), true, false).getClusterState();
// Make sure that primary shards are only allocated on the new node
for (int i = 0; i < numberOfShards; i++) {
assertEquals("newNode", state.routingTable().index("test").getShards().get(i).primaryShard().currentNodeId());
}
}
private ClusterState stabilize(ClusterState clusterState, AllocationService service) {
logger.trace("RoutingNodes: {}", clusterState.getRoutingNodes());
clusterState = service.deassociateDeadNodes(clusterState, true, "reroute");
RoutingNodes routingNodes = clusterState.getRoutingNodes();
assertRecoveryNodeVersions(routingNodes);
logger.info("complete rebalancing");
boolean changed;
do {
logger.trace("RoutingNodes: {}", clusterState.getRoutingNodes());
ClusterState newState = service.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING));
changed = newState.equals(clusterState) == false;
clusterState = newState;
routingNodes = clusterState.getRoutingNodes();
assertRecoveryNodeVersions(routingNodes);
} while (changed);
return clusterState;
}
private void assertRecoveryNodeVersions(RoutingNodes routingNodes) {
logger.trace("RoutingNodes: {}", routingNodes);
List<ShardRouting> mutableShardRoutings = routingNodes.shardsWithState(ShardRoutingState.RELOCATING);
for (ShardRouting r : mutableShardRoutings) {
if (r.primary()) {
String toId = r.relocatingNodeId();
String fromId = r.currentNodeId();
assertThat(fromId, notNullValue());
assertThat(toId, notNullValue());
logger.trace("From: {} with Version: {} to: {} with Version: {}", fromId, routingNodes.node(fromId).node().getVersion(),
toId, routingNodes.node(toId).node().getVersion());
assertTrue(routingNodes.node(toId).node().getVersion().onOrAfter(routingNodes.node(fromId).node().getVersion()));
} else {
ShardRouting primary = routingNodes.activePrimary(r.shardId());
assertThat(primary, notNullValue());
String fromId = primary.currentNodeId();
String toId = r.relocatingNodeId();
logger.trace("From: {} with Version: {} to: {} with Version: {}", fromId, routingNodes.node(fromId).node().getVersion(),
toId, routingNodes.node(toId).node().getVersion());
assertTrue(routingNodes.node(toId).node().getVersion().onOrAfter(routingNodes.node(fromId).node().getVersion()));
}
}
mutableShardRoutings = routingNodes.shardsWithState(ShardRoutingState.INITIALIZING);
for (ShardRouting r : mutableShardRoutings) {
if (!r.primary()) {
ShardRouting primary = routingNodes.activePrimary(r.shardId());
assertThat(primary, notNullValue());
String fromId = primary.currentNodeId();
String toId = r.currentNodeId();
logger.trace("From: {} with Version: {} to: {} with Version: {}", fromId, routingNodes.node(fromId).node().getVersion(),
toId, routingNodes.node(toId).node().getVersion());
assertTrue(routingNodes.node(toId).node().getVersion().onOrAfter(routingNodes.node(fromId).node().getVersion()));
}
}
}
}