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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.apache.logging.log4j.Logger;
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.allocation.decider.ThrottlingAllocationDecider;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
import static org.hamcrest.Matchers.equalTo;
/**
*/
public class PreferPrimaryAllocationTests extends ESAllocationTestCase {
private final Logger logger = Loggers.getLogger(PreferPrimaryAllocationTests.class);
public void testPreferPrimaryAllocationOverReplicas() {
logger.info("create an allocation with 1 initial recoveries");
AllocationService strategy = createAllocationService(Settings.builder()
.put("cluster.routing.allocation.node_concurrent_recoveries", 1)
.put(ThrottlingAllocationDecider.CLUSTER_ROUTING_ALLOCATION_NODE_CONCURRENT_OUTGOING_RECOVERIES_SETTING.getKey(), 10)
.put("cluster.routing.allocation.node_initial_primaries_recoveries", 1)
.build());
logger.info("create several indices with no replicas, and wait till all are allocated");
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test1").settings(settings(Version.CURRENT)).numberOfShards(10).numberOfReplicas(0))
.put(IndexMetaData.builder("test2").settings(settings(Version.CURRENT)).numberOfShards(10).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("increasing the number of replicas to 1, and perform a reroute (to get the replicas allocation going)");
RoutingTable updatedRoutingTable = RoutingTable.builder(clusterState.routingTable()).updateNumberOfReplicas(1).build();
metaData = MetaData.builder(clusterState.metaData()).updateNumberOfReplicas(1).build();
clusterState = ClusterState.builder(clusterState).routingTable(updatedRoutingTable).metaData(metaData).build();
clusterState = strategy.reroute(clusterState, "reroute");
logger.info("2 replicas should be initializing now for the existing indices (we throttle to 1)");
assertThat(clusterState.getRoutingNodes().shardsWithState(INITIALIZING).size(), equalTo(2));
logger.info("create a new index");
metaData = MetaData.builder(clusterState.metaData())
.put(IndexMetaData.builder("new_index").settings(settings(Version.CURRENT)).numberOfShards(4).numberOfReplicas(0))
.build();
updatedRoutingTable = RoutingTable.builder(clusterState.routingTable())
.addAsNew(metaData.index("new_index"))
.build();
clusterState = ClusterState.builder(clusterState).metaData(metaData).routingTable(updatedRoutingTable).build();
logger.info("reroute, verify that primaries for the new index primary shards are allocated");
clusterState = strategy.reroute(clusterState, "reroute");
assertThat(clusterState.routingTable().index("new_index").shardsWithState(INITIALIZING).size(), equalTo(2));
}
}
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