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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.threadpool;
import org.elasticsearch.action.admin.cluster.node.info.NodeInfo;
import org.elasticsearch.action.admin.cluster.node.info.NodesInfoResponse;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.json.JsonXContent;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.node.Node;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.ESIntegTestCase.ClusterScope;
import org.elasticsearch.test.ESIntegTestCase.Scope;
import org.elasticsearch.test.ESSingleNodeTestCase;
import org.elasticsearch.test.InternalTestCluster;
import org.elasticsearch.test.hamcrest.RegexMatcher;
import org.elasticsearch.threadpool.ThreadPool.Names;
import org.elasticsearch.tribe.TribeIT;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.regex.Pattern;
import static org.elasticsearch.common.settings.Settings.settingsBuilder;
import static org.elasticsearch.common.xcontent.XContentFactory.jsonBuilder;
import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertNoFailures;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.not;
import static org.hamcrest.Matchers.sameInstance;
/**
*/
@ClusterScope(scope = Scope.TEST, numDataNodes = 0, numClientNodes = 0)
public class SimpleThreadPoolIT extends ESIntegTestCase {
@Override
protected Settings nodeSettings(int nodeOrdinal) {
return Settings.settingsBuilder().build();
}
public void testThreadNames() throws Exception {
ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
Set<String> preNodeStartThreadNames = new HashSet<>();
for (long l : threadBean.getAllThreadIds()) {
ThreadInfo threadInfo = threadBean.getThreadInfo(l);
if (threadInfo != null) {
preNodeStartThreadNames.add(threadInfo.getThreadName());
}
}
logger.info("pre node threads are {}", preNodeStartThreadNames);
String node = internalCluster().startNode();
logger.info("do some indexing, flushing, optimize, and searches");
int numDocs = randomIntBetween(2, 100);
IndexRequestBuilder[] builders = new IndexRequestBuilder[numDocs];
for (int i = 0; i < numDocs; ++i) {
builders[i] = client().prepareIndex("idx", "type").setSource(jsonBuilder()
.startObject()
.field("str_value", "s" + i)
.field("str_values", new String[]{"s" + (i * 2), "s" + (i * 2 + 1)})
.field("l_value", i)
.field("l_values", new int[]{i * 2, i * 2 + 1})
.field("d_value", i)
.field("d_values", new double[]{i * 2, i * 2 + 1})
.endObject());
}
indexRandom(true, builders);
int numSearches = randomIntBetween(2, 100);
for (int i = 0; i < numSearches; i++) {
assertNoFailures(client().prepareSearch("idx").setQuery(QueryBuilders.termQuery("str_value", "s" + i)).get());
assertNoFailures(client().prepareSearch("idx").setQuery(QueryBuilders.termQuery("l_value", i)).get());
}
Set<String> threadNames = new HashSet<>();
for (long l : threadBean.getAllThreadIds()) {
ThreadInfo threadInfo = threadBean.getThreadInfo(l);
if (threadInfo != null) {
threadNames.add(threadInfo.getThreadName());
}
}
logger.info("post node threads are {}", threadNames);
threadNames.removeAll(preNodeStartThreadNames);
logger.info("post node *new* threads are {}", threadNames);
for (String threadName : threadNames) {
// ignore some shared threads we know that are created within the same VM, like the shared discovery one
// or the ones that are occasionally come up from ESSingleNodeTestCase
if (threadName.contains("[" + ESSingleNodeTestCase.nodeName() + "]")
|| threadName.contains("Keep-Alive-Timer")) {
continue;
}
String nodePrefix = "(" + Pattern.quote(InternalTestCluster.TRANSPORT_CLIENT_PREFIX) + ")?(" +
Pattern.quote(ESIntegTestCase.SUITE_CLUSTER_NODE_PREFIX) + "|" +
Pattern.quote(ESIntegTestCase.TEST_CLUSTER_NODE_PREFIX) + "|" +
Pattern.quote(TribeIT.SECOND_CLUSTER_NODE_PREFIX) + ")";
assertThat(threadName, RegexMatcher.matches("\\[" + nodePrefix + "\\d+\\]"));
}
}
public void testUpdatingThreadPoolSettings() throws Exception {
internalCluster().startNodesAsync(2).get();
ThreadPool threadPool = internalCluster().getDataNodeInstance(ThreadPool.class);
// Check that settings are changed
assertThat(((ThreadPoolExecutor) threadPool.executor(Names.SEARCH)).getQueue().remainingCapacity(), equalTo(1000));
client().admin().cluster().prepareUpdateSettings().setTransientSettings(settingsBuilder().put("threadpool.search.queue_size", 2000).build()).execute().actionGet();
assertThat(((ThreadPoolExecutor) threadPool.executor(Names.SEARCH)).getQueue().remainingCapacity(), equalTo(2000));
// Make sure that threads continue executing when executor is replaced
final CyclicBarrier barrier = new CyclicBarrier(2);
Executor oldExecutor = threadPool.executor(Names.SEARCH);
threadPool.executor(Names.SEARCH).execute(() -> {
try {
barrier.await();
} catch (InterruptedException ex) {
Thread.currentThread().interrupt();
} catch (BrokenBarrierException ex) {
//
}
});
client().admin().cluster().prepareUpdateSettings().setTransientSettings(settingsBuilder().put("threadpool.search.queue_size", 1000).build()).execute().actionGet();
assertThat(threadPool.executor(Names.SEARCH), not(sameInstance(oldExecutor)));
assertThat(((ThreadPoolExecutor) oldExecutor).isShutdown(), equalTo(true));
assertThat(((ThreadPoolExecutor) oldExecutor).isTerminating(), equalTo(true));
assertThat(((ThreadPoolExecutor) oldExecutor).isTerminated(), equalTo(false));
barrier.await(10, TimeUnit.SECONDS);
// Make sure that new thread executor is functional
threadPool.executor(Names.SEARCH).execute(() -> {
try {
barrier.await();
} catch (InterruptedException ex) {
Thread.currentThread().interrupt();
} catch (BrokenBarrierException ex) {
//
}
}
);
client().admin().cluster().prepareUpdateSettings().setTransientSettings(settingsBuilder().put("threadpool.search.queue_size", 500)).execute().actionGet();
barrier.await(10, TimeUnit.SECONDS);
// Check that node info is correct
NodesInfoResponse nodesInfoResponse = client().admin().cluster().prepareNodesInfo().all().execute().actionGet();
for (int i = 0; i < 2; i++) {
NodeInfo nodeInfo = nodesInfoResponse.getNodes()[i];
boolean found = false;
for (ThreadPool.Info info : nodeInfo.getThreadPool()) {
if (info.getName().equals(Names.SEARCH)) {
assertEquals(info.getThreadPoolType(), ThreadPool.ThreadPoolType.FIXED);
found = true;
break;
}
}
assertThat(found, equalTo(true));
}
}
public void testThreadPoolLeakingThreadsWithTribeNode() {
Settings settings = Settings.builder()
.put("node.name", "thread_pool_leaking_threads_tribe_node")
.put("path.home", createTempDir())
.put("tribe.t1.cluster.name", "non_existing_cluster")
//trigger initialization failure of one of the tribes (doesn't require starting the node)
.put("tribe.t1.plugin.mandatory", "non_existing").build();
try {
new Node(settings);
fail("The node startup is supposed to fail");
} catch(Throwable t) {
//all good
assertThat(t.getMessage(), containsString("mandatory plugins [non_existing]"));
}
}
private Map<String, Object> getPoolSettingsThroughJson(ThreadPoolInfo info, String poolName) throws IOException {
XContentBuilder builder = XContentFactory.jsonBuilder();
builder.startObject();
info.toXContent(builder, ToXContent.EMPTY_PARAMS);
builder.endObject();
builder.close();
Map<String, Object> poolsMap;
try (XContentParser parser = JsonXContent.jsonXContent.createParser(builder.string())) {
poolsMap = parser.map();
}
return (Map<String, Object>) ((Map<String, Object>) poolsMap.get("thread_pool")).get(poolName);
}
}
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