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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.index;
import org.elasticsearch.action.index.IndexAction;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.health.ClusterHealthStatus;
import org.elasticsearch.cluster.routing.IndexShardRoutingTable;
import org.elasticsearch.cluster.routing.RoutingNodes;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.discovery.DiscoverySettings;
import org.elasticsearch.discovery.zen.fd.FaultDetection;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.transport.MockTransportService;
import org.elasticsearch.transport.TransportService;
import java.util.Collection;
import java.util.List;
import static java.util.Collections.singleton;
import static org.elasticsearch.cluster.routing.ShardRoutingState.INITIALIZING;
import static org.elasticsearch.cluster.routing.ShardRoutingState.RELOCATING;
import static org.elasticsearch.cluster.routing.ShardRoutingState.STARTED;
import static org.elasticsearch.cluster.routing.ShardRoutingState.UNASSIGNED;
import static org.hamcrest.Matchers.equalTo;
/**
* Test failure when index replication actions fail mid-flight
*/
@ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0, transportClientRatio = 0)
@ESIntegTestCase.SuppressLocalMode
public class TransportIndexFailuresIT extends ESIntegTestCase {
private static final Settings nodeSettings = Settings.settingsBuilder()
.put("discovery.type", "zen") // <-- To override the local setting if set externally
.put(FaultDetection.PING_TIMEOUT_SETTING.getKey(), "1s") // <-- for hitting simulated network failures quickly
.put(FaultDetection.PING_RETRIES_SETTING.getKey(), "1") // <-- for hitting simulated network failures quickly
.put(DiscoverySettings.PUBLISH_TIMEOUT_SETTING.getKey(), "1s") // <-- for hitting simulated network failures quickly
.put("discovery.zen.minimum_master_nodes", 1)
.build();
@Override
protected Collection<Class<? extends Plugin>> nodePlugins() {
return pluginList(MockTransportService.TestPlugin.class);
}
@Override
protected int numberOfShards() {
return 1;
}
@Override
protected int numberOfReplicas() {
return 1;
}
public void testNetworkPartitionDuringReplicaIndexOp() throws Exception {
final String INDEX = "testidx";
List<String> nodes = internalCluster().startNodesAsync(2, nodeSettings).get();
// Create index test with 1 shard, 1 replica and ensure it is green
createIndex(INDEX);
ensureGreen(INDEX);
// Disable allocation so the replica cannot be reallocated when it fails
Settings s = Settings.builder().put("cluster.routing.allocation.enable", "none").build();
client().admin().cluster().prepareUpdateSettings().setTransientSettings(s).get();
// Determine which node holds the primary shard
ClusterState state = getNodeClusterState(nodes.get(0));
IndexShardRoutingTable shard = state.getRoutingTable().index(INDEX).shard(0);
String primaryNode;
String replicaNode;
if (shard.getShards().get(0).primary()) {
primaryNode = nodes.get(0);
replicaNode = nodes.get(1);
} else {
primaryNode = nodes.get(1);
replicaNode = nodes.get(0);
}
logger.info("--> primary shard is on {}", primaryNode);
// Index a document to make sure everything works well
IndexResponse resp = internalCluster().client(primaryNode).prepareIndex(INDEX, "doc").setSource("foo", "bar").get();
assertThat("document exists on primary node",
internalCluster().client(primaryNode).prepareGet(INDEX, "doc", resp.getId()).setPreference("_only_local").get().isExists(),
equalTo(true));
assertThat("document exists on replica node",
internalCluster().client(replicaNode).prepareGet(INDEX, "doc", resp.getId()).setPreference("_only_local").get().isExists(),
equalTo(true));
// Disrupt the network so indexing requests fail to replicate
logger.info("--> preventing index/replica operations");
TransportService mockTransportService = internalCluster().getInstance(TransportService.class, primaryNode);
((MockTransportService) mockTransportService).addFailToSendNoConnectRule(
internalCluster().getInstance(TransportService.class, replicaNode),
singleton(IndexAction.NAME + "[r]")
);
mockTransportService = internalCluster().getInstance(TransportService.class, replicaNode);
((MockTransportService) mockTransportService).addFailToSendNoConnectRule(
internalCluster().getInstance(TransportService.class, primaryNode),
singleton(IndexAction.NAME + "[r]")
);
logger.info("--> indexing into primary");
// the replica shard should now be marked as failed because the replication operation will fail
resp = internalCluster().client(primaryNode).prepareIndex(INDEX, "doc").setSource("foo", "baz").get();
// wait until the cluster reaches an exact yellow state, meaning replica has failed
assertBusy(new Runnable() {
@Override
public void run() {
assertThat(client().admin().cluster().prepareHealth().get().getStatus(), equalTo(ClusterHealthStatus.YELLOW));
}
});
assertThat("document should still be indexed and available",
client().prepareGet(INDEX, "doc", resp.getId()).get().isExists(), equalTo(true));
state = getNodeClusterState(randomFrom(nodes.toArray(Strings.EMPTY_ARRAY)));
RoutingNodes rn = state.getRoutingNodes();
logger.info("--> counts: total: {}, unassigned: {}, initializing: {}, relocating: {}, started: {}",
rn.shards(input -> true).size(),
rn.shardsWithState(UNASSIGNED).size(),
rn.shardsWithState(INITIALIZING).size(),
rn.shardsWithState(RELOCATING).size(),
rn.shardsWithState(STARTED).size());
logger.info("--> unassigned: {}, initializing: {}, relocating: {}, started: {}",
rn.shardsWithState(UNASSIGNED),
rn.shardsWithState(INITIALIZING),
rn.shardsWithState(RELOCATING),
rn.shardsWithState(STARTED));
assertThat("only a single shard is now active (replica should be failed and not reallocated)",
rn.shardsWithState(STARTED).size(), equalTo(1));
}
private ClusterState getNodeClusterState(String node) {
return internalCluster().client(node).admin().cluster().prepareState().setLocal(true).get().getState();
}
}
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