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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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* Unless required by applicable law or agreed to in writing,
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package org.elasticsearch.cluster.routing.allocation;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterName;
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.AllocationId;
import org.elasticsearch.cluster.routing.IndexRoutingTable;
import org.elasticsearch.cluster.routing.IndexShardRoutingTable;
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.common.settings.Settings;
import org.elasticsearch.common.util.set.Sets;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.shard.ShardId;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.not;
import static org.hamcrest.Matchers.nullValue;
public class StartedShardsRoutingTests extends ESAllocationTestCase {
public void testStartedShardsMatching() {
AllocationService allocation = createAllocationService();
logger.info("--> building initial cluster state");
AllocationId allocationId = AllocationId.newRelocation(AllocationId.newInitializing());
final IndexMetaData indexMetaData = IndexMetaData.builder("test")
.settings(settings(Version.CURRENT))
.numberOfShards(2).numberOfReplicas(0)
.putInSyncAllocationIds(1, Collections.singleton(allocationId.getId()))
.build();
final Index index = indexMetaData.getIndex();
ClusterState.Builder stateBuilder = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY))
.nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")))
.metaData(MetaData.builder().put(indexMetaData, false));
final ShardRouting initShard = TestShardRouting.newShardRouting(new ShardId(index, 0), "node1", true, ShardRoutingState.INITIALIZING);
final ShardRouting relocatingShard = TestShardRouting.newShardRouting(new ShardId(index, 1), "node1", "node2", true, ShardRoutingState.RELOCATING, allocationId);
stateBuilder.routingTable(RoutingTable.builder().add(IndexRoutingTable.builder(index)
.addIndexShard(new IndexShardRoutingTable.Builder(initShard.shardId()).addShard(initShard).build())
.addIndexShard(new IndexShardRoutingTable.Builder(relocatingShard.shardId()).addShard(relocatingShard).build())).build());
ClusterState state = stateBuilder.build();
logger.info("--> test starting of shard");
ClusterState newState = allocation.applyStartedShards(state, Arrays.asList(initShard));
assertThat("failed to start " + initShard + "\ncurrent routing table:" + newState.routingTable(), newState, not(equalTo(state)));
assertTrue(initShard + "isn't started \ncurrent routing table:" + newState.routingTable(),
newState.routingTable().index("test").shard(initShard.id()).allShardsStarted());
state = newState;
logger.info("--> testing starting of relocating shards");
newState = allocation.applyStartedShards(state, Arrays.asList(relocatingShard.getTargetRelocatingShard()));
assertThat("failed to start " + relocatingShard + "\ncurrent routing table:" + newState.routingTable(),
newState, not(equalTo(state)));
ShardRouting shardRouting = newState.routingTable().index("test").shard(relocatingShard.id()).getShards().get(0);
assertThat(shardRouting.state(), equalTo(ShardRoutingState.STARTED));
assertThat(shardRouting.currentNodeId(), equalTo("node2"));
assertThat(shardRouting.relocatingNodeId(), nullValue());
}
public void testRelocatingPrimariesWithInitializingReplicas() {
AllocationService allocation = createAllocationService();
logger.info("--> building initial cluster state");
AllocationId primaryId = AllocationId.newRelocation(AllocationId.newInitializing());
AllocationId replicaId = AllocationId.newInitializing();
boolean relocatingReplica = randomBoolean();
if (relocatingReplica) {
replicaId = AllocationId.newRelocation(replicaId);
}
final IndexMetaData indexMetaData = IndexMetaData.builder("test")
.settings(settings(Version.CURRENT))
.numberOfShards(1).numberOfReplicas(1)
.putInSyncAllocationIds(0,
relocatingReplica ? Sets.newHashSet(primaryId.getId(), replicaId.getId()) : Sets.newHashSet(primaryId.getId()))
.build();
final Index index = indexMetaData.getIndex();
ClusterState.Builder stateBuilder = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY))
.nodes(DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3")).add(newNode("node4")))
.metaData(MetaData.builder().put(indexMetaData, false));
final ShardRouting relocatingPrimary = TestShardRouting.newShardRouting(
new ShardId(index, 0), "node1", "node2", true, ShardRoutingState.RELOCATING, primaryId);
final ShardRouting replica = TestShardRouting.newShardRouting(
new ShardId(index, 0), "node3", relocatingReplica ? "node4" : null, false,
relocatingReplica ? ShardRoutingState.RELOCATING : ShardRoutingState.INITIALIZING, replicaId);
stateBuilder.routingTable(RoutingTable.builder().add(IndexRoutingTable.builder(index)
.addIndexShard(new IndexShardRoutingTable.Builder(relocatingPrimary.shardId())
.addShard(relocatingPrimary)
.addShard(replica)
.build()))
.build());
ClusterState state = stateBuilder.build();
logger.info("--> test starting of relocating primary shard with initializing / relocating replica");
ClusterState newState = allocation.applyStartedShards(state, Arrays.asList(relocatingPrimary.getTargetRelocatingShard()));
assertNotEquals(newState, state);
assertTrue(newState.routingTable().index("test").allPrimaryShardsActive());
ShardRouting startedReplica = newState.routingTable().index("test").shard(0).replicaShards().get(0);
if (relocatingReplica) {
assertTrue(startedReplica.relocating());
assertEquals(replica.currentNodeId(), startedReplica.currentNodeId());
assertEquals(replica.relocatingNodeId(), startedReplica.relocatingNodeId());
assertEquals(replica.allocationId().getId(), startedReplica.allocationId().getId());
assertNotEquals(replica.allocationId().getRelocationId(), startedReplica.allocationId().getRelocationId());
} else {
assertTrue(startedReplica.initializing());
assertEquals(replica.currentNodeId(), startedReplica.currentNodeId());
assertNotEquals(replica.allocationId().getId(), startedReplica.allocationId().getId());
}
logger.info("--> test starting of relocating primary shard together with initializing / relocating replica");
List<ShardRouting> startedShards = new ArrayList<>();
startedShards.add(relocatingPrimary.getTargetRelocatingShard());
startedShards.add(relocatingReplica ? replica.getTargetRelocatingShard() : replica);
Collections.shuffle(startedShards, random());
newState = allocation.applyStartedShards(state, startedShards);
assertNotEquals(newState, state);
assertTrue(newState.routingTable().index("test").shard(0).allShardsStarted());
}
}