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package org.elasticsearch.cluster.routing.allocation;
/*
* 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.
*/
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.DiscoveryNodes;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.cluster.ESAllocationTestCase;
import java.util.Arrays;
import java.util.HashSet;
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.hamcrest.Matchers.equalTo;
public class ActiveAllocationIdTests extends ESAllocationTestCase {
public void testActiveAllocationIdsUpdated() {
AllocationService allocation = createAllocationService();
logger.info("creating an index with 1 shard, 2 replicas");
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(2))
// add index metadata where we have no routing nodes to check that allocation ids are not removed
.put(IndexMetaData.builder("test-old").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(2)
.putActiveAllocationIds(0, new HashSet<>(Arrays.asList("x", "y"))))
.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();
logger.info("adding three nodes and performing rerouting");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder().add(
newNode("node1")).add(newNode("node2")).add(newNode("node3"))).build();
RoutingAllocation.Result rerouteResult = allocation.reroute(clusterState, "reroute");
clusterState = ClusterState.builder(clusterState).routingResult(rerouteResult).build();
assertThat(clusterState.metaData().index("test").activeAllocationIds(0).size(), equalTo(0));
assertThat(clusterState.metaData().index("test-old").activeAllocationIds(0), equalTo(new HashSet<>(Arrays.asList("x", "y"))));
logger.info("start primary shard");
rerouteResult = allocation.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
clusterState = ClusterState.builder(clusterState).routingResult(rerouteResult).build();
assertThat(clusterState.getRoutingTable().shardsWithState(STARTED).size(), equalTo(1));
assertThat(clusterState.metaData().index("test").activeAllocationIds(0).size(), equalTo(1));
assertThat(clusterState.getRoutingTable().shardsWithState(STARTED).get(0).allocationId().getId(),
equalTo(clusterState.metaData().index("test").activeAllocationIds(0).iterator().next()));
assertThat(clusterState.metaData().index("test-old").activeAllocationIds(0), equalTo(new HashSet<>(Arrays.asList("x", "y"))));
logger.info("start replica shards");
rerouteResult = allocation.applyStartedShards(clusterState, clusterState.getRoutingNodes().shardsWithState(INITIALIZING));
clusterState = ClusterState.builder(clusterState).routingResult(rerouteResult).build();
assertThat(clusterState.metaData().index("test").activeAllocationIds(0).size(), equalTo(3));
logger.info("remove a node");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.remove("node1"))
.build();
rerouteResult = allocation.deassociateDeadNodes(clusterState, true, "reroute");
clusterState = ClusterState.builder(clusterState).routingResult(rerouteResult).build();
assertThat(clusterState.metaData().index("test").activeAllocationIds(0).size(), equalTo(2));
logger.info("remove all remaining nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder(clusterState.nodes())
.remove("node2").remove("node3"))
.build();
rerouteResult = allocation.deassociateDeadNodes(clusterState, true, "reroute");
clusterState = ClusterState.builder(clusterState).routingResult(rerouteResult).build();
// active allocation ids should not be updated
assertThat(clusterState.getRoutingTable().shardsWithState(UNASSIGNED).size(), equalTo(3));
assertThat(clusterState.metaData().index("test").activeAllocationIds(0).size(), equalTo(2));
}
}
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