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YARN-8482. [Router] Add cache for fast answers to getApps. (#4769)

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slfan1989 2022-08-28 01:14:55 +08:00 committed by GitHub
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6 changed files with 271 additions and 1 deletions
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9
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
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@ -4128,6 +4128,15 @@ public static boolean isAclEnabled(Configuration conf) {
public static final String ROUTER_KERBEROS_PRINCIPAL_HOSTNAME_KEY = ROUTER_PREFIX +
"kerberos.principal.hostname";
/** Router enable AppsInfo Cache. **/
public static final String ROUTER_APPSINFO_ENABLED = ROUTER_WEBAPP_PREFIX + "appsinfo-enabled";
public static final boolean DEFAULT_ROUTER_APPSINFO_ENABLED = false;
/** Router AppsInfo Cache Count. **/
public static final String ROUTER_APPSINFO_CACHED_COUNT =
ROUTER_WEBAPP_PREFIX + "appsinfo-cached-count";
public static final int DEFAULT_ROUTER_APPSINFO_CACHED_COUNT = 100;
////////////////////////////////
// CSI Volume configs
////////////////////////////////

20
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
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@ -4943,4 +4943,24 @@
</description>
</property>
<property>
<name>yarn.router.webapp.appsinfo-enabled</name>
<value>false</value>
<description>
This configuration is used to enable the cache of AppsInfo.
If it is set to true, the cache is enabled.
If it is set to false, the cache is not enabled.
</description>
</property>
<property>
<name>yarn.router.webapp.appsinfo-cached-count</name>
<value>100</value>
<description>
When yarn.router.appsinfo-enabled is set to true,
the number of cached appsInfo.
Default is 100
</description>
</property>
</configuration>

41
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/webapp/FederationInterceptorREST.java
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@ -100,9 +100,11 @@
import org.apache.hadoop.yarn.server.router.RouterMetrics;
import org.apache.hadoop.yarn.server.router.RouterServerUtil;
import org.apache.hadoop.yarn.server.router.clientrm.ClientMethod;
import org.apache.hadoop.yarn.server.router.webapp.cache.RouterAppInfoCacheKey;
import org.apache.hadoop.yarn.server.webapp.dao.AppAttemptInfo;
import org.apache.hadoop.yarn.server.webapp.dao.ContainerInfo;
import org.apache.hadoop.yarn.server.webapp.dao.ContainersInfo;
import org.apache.hadoop.yarn.util.LRUCacheHashMap;
import org.apache.hadoop.yarn.webapp.dao.SchedConfUpdateInfo;
import org.apache.hadoop.yarn.util.Clock;
import org.apache.hadoop.yarn.util.MonotonicClock;
@ -132,8 +134,11 @@ public class FederationInterceptorREST extends AbstractRESTRequestInterceptor {
private RouterMetrics routerMetrics;
private final Clock clock = new MonotonicClock();
private boolean returnPartialReport;
private boolean appInfosCacheEnabled;
private int appInfosCacheCount;
private Map<SubClusterId, DefaultRequestInterceptorREST> interceptors;
private LRUCacheHashMap<RouterAppInfoCacheKey, AppsInfo> appInfosCaches;
/**
* Thread pool used for asynchronous operations.
@ -170,6 +175,17 @@ public void init(String user) {
returnPartialReport = conf.getBoolean(
YarnConfiguration.ROUTER_WEBAPP_PARTIAL_RESULTS_ENABLED,
YarnConfiguration.DEFAULT_ROUTER_WEBAPP_PARTIAL_RESULTS_ENABLED);
appInfosCacheEnabled = conf.getBoolean(
YarnConfiguration.ROUTER_APPSINFO_ENABLED,
YarnConfiguration.DEFAULT_ROUTER_APPSINFO_ENABLED);
if(appInfosCacheEnabled) {
appInfosCacheCount = conf.getInt(
YarnConfiguration.ROUTER_APPSINFO_CACHED_COUNT,
YarnConfiguration.DEFAULT_ROUTER_APPSINFO_CACHED_COUNT);
appInfosCaches = new LRUCacheHashMap<>(appInfosCacheCount, true);
}
}
private SubClusterId getRandomActiveSubCluster(
@ -681,6 +697,18 @@ public AppsInfo getApps(HttpServletRequest hsr, String stateQuery,
String queueQuery, String count, String startedBegin, String startedEnd,
String finishBegin, String finishEnd, Set<String> applicationTypes,
Set<String> applicationTags, String name, Set<String> unselectedFields) {
RouterAppInfoCacheKey routerAppInfoCacheKey = RouterAppInfoCacheKey.newInstance(
hsr, stateQuery, statesQuery, finalStatusQuery, userQuery, queueQuery, count,
startedBegin, startedEnd, finishBegin, finishEnd, applicationTypes,
applicationTags, name, unselectedFields);
if (appInfosCacheEnabled && routerAppInfoCacheKey != null) {
if (appInfosCaches.containsKey(routerAppInfoCacheKey)) {
return appInfosCaches.get(routerAppInfoCacheKey);
}
}
AppsInfo apps = new AppsInfo();
long startTime = clock.getTime();
@ -744,8 +772,14 @@ public AppsInfo call() {
}
// Merge all the application reports got from all the available YARN RMs
return RouterWebServiceUtil.mergeAppsInfo(
AppsInfo resultAppsInfo = RouterWebServiceUtil.mergeAppsInfo(
apps.getApps(), returnPartialReport);
if (appInfosCacheEnabled && routerAppInfoCacheKey != null) {
appInfosCaches.put(routerAppInfoCacheKey, resultAppsInfo);
}
return resultAppsInfo;
}
/**
@ -1773,4 +1807,9 @@ private SubClusterInfo getHomeSubClusterInfoByAppId(String appId)
}
throw new YarnException("Unable to get subCluster by applicationId = " + appId);
}
@VisibleForTesting
public LRUCacheHashMap<RouterAppInfoCacheKey, AppsInfo> getAppInfosCaches() {
return appInfosCaches;
}
}

156
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/webapp/cache/RouterAppInfoCacheKey.java vendored Normal file
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@ -0,0 +1,156 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.hadoop.yarn.server.router.webapp.cache;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebAppUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletRequest;
import java.util.Set;
public class RouterAppInfoCacheKey {
private static String user = "YarnRouter";
private static final Logger LOG =
LoggerFactory.getLogger(RouterAppInfoCacheKey.class.getName());
private UserGroupInformation ugi;
private String stateQuery;
private Set<String> statesQuery;
private String finalStatusQuery;
private String userQuery;
private String queueQuery;
private String count;
private String startedBegin;
private String startedEnd;
private String finishBegin;
private String finishEnd;
private Set<String> applicationTypes;
private Set<String> applicationTags;
private String name;
private Set<String> unselectedFields;
public RouterAppInfoCacheKey() {
}
@SuppressWarnings("checkstyle:ParameterNumber")
public RouterAppInfoCacheKey(UserGroupInformation ugi, String stateQuery,
Set<String> statesQuery, String finalStatusQuery, String userQuery,
String queueQuery, String count, String startedBegin, String startedEnd,
String finishBegin, String finishEnd, Set<String> applicationTypes,
Set<String> applicationTags, String name, Set<String> unselectedFields) {
this.ugi = ugi;
this.stateQuery = stateQuery;
this.statesQuery = statesQuery;
this.finalStatusQuery = finalStatusQuery;
this.userQuery = userQuery;
this.queueQuery = queueQuery;
this.count = count;
this.startedBegin = startedBegin;
this.startedEnd = startedEnd;
this.finishBegin = finishBegin;
this.finishEnd = finishEnd;
this.applicationTypes = applicationTypes;
this.applicationTags = applicationTags;
this.name = name;
this.unselectedFields = unselectedFields;
}
@SuppressWarnings("checkstyle:ParameterNumber")
public static RouterAppInfoCacheKey newInstance(HttpServletRequest hsr, String stateQuery,
Set<String> statesQuery, String finalStatusQuery, String userQuery,
String queueQuery, String count, String startedBegin, String startedEnd,
String finishBegin, String finishEnd, Set<String> applicationTypes,
Set<String> applicationTags, String name, Set<String> unselectedFields) {
UserGroupInformation callerUGI = null;
if (hsr != null) {
callerUGI = RMWebAppUtil.getCallerUserGroupInformation(hsr, true);
} else {
// user not required
callerUGI = UserGroupInformation.createRemoteUser("YarnRouter");
}
if (callerUGI == null) {
LOG.error("Unable to obtain user name, user not authenticated.");
return null;
}
return new RouterAppInfoCacheKey(
callerUGI, stateQuery, statesQuery, finalStatusQuery, userQuery,
queueQuery, count, startedBegin, startedEnd, finishBegin, finishEnd,
applicationTypes, applicationTags, name, unselectedFields);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
RouterAppInfoCacheKey that = (RouterAppInfoCacheKey) o;
return new EqualsBuilder()
.append(this.ugi.getUserName(), that.ugi.getUserName())
.append(this.stateQuery, that.stateQuery)
.append(this.statesQuery, that.statesQuery)
.append(this.finalStatusQuery, that.finalStatusQuery)
.append(this.userQuery, that.userQuery)
.append(this.queueQuery, that.queueQuery)
.append(this.count, that.count)
.append(this.startedBegin, that.startedBegin)
.append(this.startedEnd, that.startedEnd)
.append(this.finishBegin, that.finishBegin)
.append(this.finishEnd, that.finishEnd)
.append(this.applicationTypes, that.applicationTypes)
.append(this.applicationTags, that.applicationTags)
.append(this.name, that.name)
.append(this.unselectedFields, that.unselectedFields)
.isEquals();
}
@Override
public int hashCode() {
return new HashCodeBuilder()
.append(this.ugi.getUserName())
.append(this.stateQuery)
.append(this.statesQuery)
.append(this.finalStatusQuery)
.append(this.userQuery)
.append(this.queueQuery)
.append(this.count)
.append(this.startedBegin)
.append(this.startedEnd)
.append(this.finishBegin)
.append(this.finishEnd)
.append(this.applicationTypes)
.append(this.applicationTags)
.append(this.name)
.append(this.unselectedFields)
.toHashCode();
}
}

18
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/webapp/cache/package-info.java vendored Normal file
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@ -0,0 +1,18 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.hadoop.yarn.server.router.webapp.cache;

28
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/test/java/org/apache/hadoop/yarn/server/router/webapp/TestFederationInterceptorREST.java
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@ -72,10 +72,12 @@
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppPriority;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppQueue;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.NodeIDsInfo;
import org.apache.hadoop.yarn.server.router.webapp.cache.RouterAppInfoCacheKey;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.ApplicationStatisticsInfo;
import org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.AppActivitiesInfo;
import org.apache.hadoop.yarn.server.webapp.dao.ContainerInfo;
import org.apache.hadoop.yarn.server.webapp.dao.ContainersInfo;
import org.apache.hadoop.yarn.util.LRUCacheHashMap;
import org.apache.hadoop.yarn.util.MonotonicClock;
import org.apache.hadoop.yarn.util.Times;
import org.junit.Assert;
@ -160,6 +162,10 @@ protected YarnConfiguration createConfiguration() {
// Disable StateStoreFacade cache
conf.setInt(YarnConfiguration.FEDERATION_CACHE_TIME_TO_LIVE_SECS, 0);
// Open AppsInfo Cache
conf.setBoolean(YarnConfiguration.ROUTER_APPSINFO_ENABLED, true);
conf.setInt(YarnConfiguration.ROUTER_APPSINFO_CACHED_COUNT, 10);
return conf;
}
@ -960,6 +966,28 @@ public void testGetAppQueue() throws IOException, InterruptedException, YarnExce
Assert.assertEquals(queueName, queue.getQueue());
}
@Test
public void testGetAppsInfoCache() throws IOException, InterruptedException, YarnException {
AppsInfo responseGet = interceptor.getApps(
null, null, null, null, null, null, null, null, null, null, null, null, null, null, null);
Assert.assertNotNull(responseGet);
RouterAppInfoCacheKey cacheKey = RouterAppInfoCacheKey.newInstance(
null, null, null, null, null, null, null, null, null, null, null, null, null, null, null);
LRUCacheHashMap<RouterAppInfoCacheKey, AppsInfo> appsInfoCache =
interceptor.getAppInfosCaches();
Assert.assertNotNull(appsInfoCache);
Assert.assertTrue(!appsInfoCache.isEmpty());
Assert.assertEquals(1, appsInfoCache.size());
Assert.assertTrue(appsInfoCache.containsKey(cacheKey));
AppsInfo cacheResult = appsInfoCache.get(cacheKey);
Assert.assertNotNull(cacheResult);
Assert.assertEquals(responseGet, cacheResult);
}
@Test
public void testGetAppStatistics() throws IOException, InterruptedException, YarnException {
AppState appStateRUNNING = new AppState(YarnApplicationState.RUNNING.name());