YARN-2179. [YARN-1492] Initial cache manager structure and context. (Chris Trezzo via kasha)
(cherry picked from commit 17d1202c35)
Conflicts:
hadoop-yarn-project/hadoop-yarn/bin/yarn
This commit is contained in:
Karthik Kambatla
parent
b680efa1e8
commit
b616c69835
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@ -5,6 +5,9 @@ Release 2.7.0 - UNRELEASED
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INCOMPATIBLE CHANGES
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NEW FEATURES
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YARN-2179. [YARN-1492] Initial cache manager structure and context.
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(Chris Trezzo via kasha)
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IMPROVEMENTS
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@ -66,6 +66,7 @@ function print_usage(){
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echo " nodemanager run a nodemanager on each slave"
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echo " timelineserver run the timeline server"
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echo " rmadmin admin tools"
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echo " sharedcachemanager run the SharedCacheManager daemon"
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echo " version print the version"
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echo " jar <jar> run a jar file"
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echo " application prints application(s)"
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@ -1285,6 +1285,28 @@ public class YarnConfiguration extends Configuration {
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public static final boolean
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TIMELINE_SERVICE_HTTP_CROSS_ORIGIN_ENABLED_DEFAULT = false;
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// ///////////////////////////////
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// Shared Cache Configs
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// ///////////////////////////////
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public static final String SHARED_CACHE_PREFIX = "yarn.sharedcache.";
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// common configs
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/** whether the shared cache is enabled/disabled */
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public static final String SHARED_CACHE_ENABLED =
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SHARED_CACHE_PREFIX + "enabled";
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public static final boolean DEFAULT_SHARED_CACHE_ENABLED = false;
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/** The config key for the shared cache root directory. */
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public static final String SHARED_CACHE_ROOT =
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SHARED_CACHE_PREFIX + "root-dir";
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public static final String DEFAULT_SHARED_CACHE_ROOT = "/sharedcache";
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/** The config key for the level of nested directories before getting to the
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* checksum directory. */
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public static final String SHARED_CACHE_NESTED_LEVEL =
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SHARED_CACHE_PREFIX + "nested-level";
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public static final int DEFAULT_SHARED_CACHE_NESTED_LEVEL = 3;
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////////////////////////////////
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// Other Configs
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////////////////////////////////
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@ -1309,6 +1309,26 @@
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<value>/etc/krb5.keytab</value>
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</property>
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<!-- Shared Cache Configuration -->
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<property>
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<description>Whether the shared cache is enabled</description>
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<name>yarn.sharedcache.enabled</name>
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<value>false</value>
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</property>
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<property>
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<description>The root directory for the shared cache</description>
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<name>yarn.sharedcache.root-dir</name>
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<value>/sharedcache</value>
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</property>
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<property>
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<description>The level of nested directories before getting to the checksum
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directories. It must be non-negative.</description>
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<name>yarn.sharedcache.nested-level</name>
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<value>3</value>
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</property>
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<!-- Other configuration -->
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<property>
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<description>The interval that the yarn client library uses to poll the
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@ -0,0 +1,81 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.yarn.server.sharedcache;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.classification.InterfaceAudience.Private;
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import org.apache.hadoop.classification.InterfaceStability.Unstable;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.Path;
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import org.apache.hadoop.yarn.conf.YarnConfiguration;
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/**
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* A utility class that contains helper methods for dealing with the internal
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* shared cache structure.
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*/
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@Private
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@Unstable
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public class SharedCacheStructureUtil {
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private static final Log LOG = LogFactory.getLog(SharedCacheStructureUtil.class);
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@Private
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public static int getCacheDepth(Configuration conf) {
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int cacheDepth =
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conf.getInt(YarnConfiguration.SHARED_CACHE_NESTED_LEVEL,
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YarnConfiguration.DEFAULT_SHARED_CACHE_NESTED_LEVEL);
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if (cacheDepth <= 0) {
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LOG.warn("Specified cache depth was less than or equal to zero."
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+ " Using default value instead. Default: "
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+ YarnConfiguration.DEFAULT_SHARED_CACHE_NESTED_LEVEL
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+ ", Specified: " + cacheDepth);
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cacheDepth = YarnConfiguration.DEFAULT_SHARED_CACHE_NESTED_LEVEL;
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}
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return cacheDepth;
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}
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@Private
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public static String getCacheEntryPath(int cacheDepth, String cacheRoot,
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String checksum) {
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if (cacheDepth <= 0) {
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throw new IllegalArgumentException(
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"The cache depth must be greater than 0. Passed value: " + cacheDepth);
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}
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if (checksum.length() < cacheDepth) {
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throw new IllegalArgumentException("The checksum passed was too short: "
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+ checksum);
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}
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// Build the cache entry path to the specified depth. For example, if the
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// depth is 3 and the checksum is 3c4f, the path would be:
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// SHARED_CACHE_ROOT/3/c/4/3c4f
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StringBuilder sb = new StringBuilder(cacheRoot);
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for (int i = 0; i < cacheDepth; i++) {
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sb.append(Path.SEPARATOR_CHAR);
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sb.append(checksum.charAt(i));
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}
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sb.append(Path.SEPARATOR_CHAR).append(checksum);
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return sb.toString();
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}
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}
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@ -0,0 +1,90 @@
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<?xml version="1.0"?>
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<!--
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. See accompanying LICENSE file.
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-->
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<project xmlns:pom="http://maven.apache.org/POM/4.0.0">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<artifactId>hadoop-yarn-server</artifactId>
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<groupId>org.apache.hadoop</groupId>
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<version>3.0.0-SNAPSHOT</version>
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</parent>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-yarn-server-sharedcachemanager</artifactId>
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<version>3.0.0-SNAPSHOT</version>
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<name>hadoop-yarn-server-sharedcachemanager</name>
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<properties>
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<!-- Needed for generating FindBugs warnings using parent pom -->
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<yarn.basedir>${project.parent.parent.basedir}</yarn.basedir>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-common</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-yarn-api</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-yarn-common</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-yarn-client</artifactId>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-all</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-common</artifactId>
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<type>test-jar</type>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-yarn-server-tests</artifactId>
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<scope>test</scope>
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<type>test-jar</type>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<!-- Publish tests jar -->
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<plugin>
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<artifactId>maven-jar-plugin</artifactId>
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<executions>
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<execution>
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<goals>
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<goal>test-jar</goal>
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</goals>
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<phase>test-compile</phase>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>
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@ -0,0 +1,65 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
|
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* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
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* to you under the Apache License, Version 2.0 (the
|
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS,
|
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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* See the License for the specific language governing permissions and
|
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* limitations under the License.
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*/
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package org.apache.hadoop.yarn.server.sharedcachemanager;
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import java.util.Collection;
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import org.apache.hadoop.classification.InterfaceAudience.Private;
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import org.apache.hadoop.classification.InterfaceStability.Evolving;
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import org.apache.hadoop.service.CompositeService;
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import org.apache.hadoop.yarn.api.records.ApplicationId;
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import org.apache.hadoop.yarn.exceptions.YarnException;
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/**
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* An interface for checking whether an app is running so that the cleaner
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* service may determine if it can safely remove a cached entry.
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*/
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@Private
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@Evolving
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public abstract class AppChecker extends CompositeService {
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public AppChecker() {
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super("AppChecker");
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}
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public AppChecker(String name) {
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super(name);
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}
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/**
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* Returns whether the app is in an active state.
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*
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* @return true if the app is found and is not in one of the completed states;
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* false otherwise
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* @throws YarnException if there is an error in determining the app state
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*/
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@Private
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public abstract boolean isApplicationActive(ApplicationId id)
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throws YarnException;
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/**
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* Returns the list of all active apps at the given time.
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*
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* @return the list of active apps, or an empty list if there is none
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* @throws YarnException if there is an error in obtaining the list
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*/
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@Private
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public abstract Collection<ApplicationId> getActiveApplications()
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throws YarnException;
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}
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|
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@ -0,0 +1,102 @@
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/**
|
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* 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.sharedcachemanager;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.EnumSet;
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import java.util.List;
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import org.apache.hadoop.classification.InterfaceAudience.Private;
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import org.apache.hadoop.classification.InterfaceStability.Unstable;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.yarn.api.records.ApplicationId;
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import org.apache.hadoop.yarn.api.records.ApplicationReport;
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import org.apache.hadoop.yarn.api.records.YarnApplicationState;
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import org.apache.hadoop.yarn.client.api.YarnClient;
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import org.apache.hadoop.yarn.exceptions.ApplicationNotFoundException;
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import org.apache.hadoop.yarn.exceptions.YarnException;
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|
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/**
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* An implementation of AppChecker that queries the resource manager remotely to
|
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* determine whether the app is running.
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*/
|
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@Private
|
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@Unstable
|
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public class RemoteAppChecker extends AppChecker {
|
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|
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private static final EnumSet<YarnApplicationState> ACTIVE_STATES = EnumSet
|
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.of(YarnApplicationState.NEW, YarnApplicationState.ACCEPTED,
|
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YarnApplicationState.NEW_SAVING, YarnApplicationState.SUBMITTED,
|
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YarnApplicationState.RUNNING);
|
||||
|
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private final YarnClient client;
|
||||
|
||||
public RemoteAppChecker() {
|
||||
this(YarnClient.createYarnClient());
|
||||
}
|
||||
|
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RemoteAppChecker(YarnClient client) {
|
||||
super("RemoteAppChecker");
|
||||
this.client = client;
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void serviceInit(Configuration conf) throws Exception {
|
||||
addService(client);
|
||||
super.serviceInit(conf);
|
||||
}
|
||||
|
||||
@Override
|
||||
@Private
|
||||
public boolean isApplicationActive(ApplicationId id) throws YarnException {
|
||||
ApplicationReport report = null;
|
||||
try {
|
||||
report = client.getApplicationReport(id);
|
||||
} catch (ApplicationNotFoundException e) {
|
||||
// the app does not exist
|
||||
return false;
|
||||
} catch (IOException e) {
|
||||
throw new YarnException(e);
|
||||
}
|
||||
|
||||
if (report == null) {
|
||||
// the app does not exist
|
||||
return false;
|
||||
}
|
||||
|
||||
return ACTIVE_STATES.contains(report.getYarnApplicationState());
|
||||
}
|
||||
|
||||
@Override
|
||||
@Private
|
||||
public Collection<ApplicationId> getActiveApplications() throws YarnException {
|
||||
try {
|
||||
List<ApplicationId> activeApps = new ArrayList<ApplicationId>();
|
||||
List<ApplicationReport> apps = client.getApplications(ACTIVE_STATES);
|
||||
for (ApplicationReport app: apps) {
|
||||
activeApps.add(app.getApplicationId());
|
||||
}
|
||||
return activeApps;
|
||||
} catch (IOException e) {
|
||||
throw new YarnException(e);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,86 @@
|
|||
/**
|
||||
* 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.sharedcachemanager;
|
||||
|
||||
import org.apache.commons.logging.Log;
|
||||
import org.apache.commons.logging.LogFactory;
|
||||
import org.apache.hadoop.classification.InterfaceAudience.Private;
|
||||
import org.apache.hadoop.classification.InterfaceStability.Unstable;
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
|
||||
import org.apache.hadoop.metrics2.source.JvmMetrics;
|
||||
import org.apache.hadoop.service.CompositeService;
|
||||
import org.apache.hadoop.util.ShutdownHookManager;
|
||||
import org.apache.hadoop.util.StringUtils;
|
||||
import org.apache.hadoop.yarn.YarnUncaughtExceptionHandler;
|
||||
import org.apache.hadoop.yarn.conf.YarnConfiguration;
|
||||
|
||||
/**
|
||||
* This service maintains the shared cache meta data. It handles claiming and
|
||||
* releasing of resources, all rpc calls from the client to the shared cache
|
||||
* manager, and administrative commands. It also persists the shared cache meta
|
||||
* data to a backend store, and cleans up stale entries on a regular basis.
|
||||
*/
|
||||
@Private
|
||||
@Unstable
|
||||
public class SharedCacheManager extends CompositeService {
|
||||
/**
|
||||
* Priority of the SharedCacheManager shutdown hook.
|
||||
*/
|
||||
public static final int SHUTDOWN_HOOK_PRIORITY = 30;
|
||||
|
||||
private static final Log LOG = LogFactory.getLog(SharedCacheManager.class);
|
||||
|
||||
public SharedCacheManager() {
|
||||
super("SharedCacheManager");
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void serviceInit(Configuration conf) throws Exception {
|
||||
// init metrics
|
||||
DefaultMetricsSystem.initialize("SharedCacheManager");
|
||||
JvmMetrics.initSingleton("SharedCacheManager", null);
|
||||
|
||||
super.serviceInit(conf);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void serviceStop() throws Exception {
|
||||
|
||||
DefaultMetricsSystem.shutdown();
|
||||
super.serviceStop();
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
Thread.setDefaultUncaughtExceptionHandler(new YarnUncaughtExceptionHandler());
|
||||
StringUtils.startupShutdownMessage(SharedCacheManager.class, args, LOG);
|
||||
try {
|
||||
Configuration conf = new YarnConfiguration();
|
||||
SharedCacheManager sharedCacheManager = new SharedCacheManager();
|
||||
ShutdownHookManager.get().addShutdownHook(
|
||||
new CompositeServiceShutdownHook(sharedCacheManager),
|
||||
SHUTDOWN_HOOK_PRIORITY);
|
||||
sharedCacheManager.init(conf);
|
||||
sharedCacheManager.start();
|
||||
} catch (Throwable t) {
|
||||
LOG.fatal("Error starting SharedCacheManager", t);
|
||||
System.exit(-1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
/**
|
||||
* 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.sharedcachemanager;
|
||||
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
import static org.mockito.Mockito.doReturn;
|
||||
import static org.mockito.Mockito.doThrow;
|
||||
import static org.mockito.Mockito.spy;
|
||||
|
||||
import org.apache.hadoop.conf.Configuration;
|
||||
import org.apache.hadoop.yarn.api.records.ApplicationId;
|
||||
import org.apache.hadoop.yarn.api.records.ApplicationReport;
|
||||
import org.apache.hadoop.yarn.api.records.YarnApplicationState;
|
||||
import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationReportPBImpl;
|
||||
import org.apache.hadoop.yarn.client.api.YarnClient;
|
||||
import org.apache.hadoop.yarn.client.api.impl.YarnClientImpl;
|
||||
import org.apache.hadoop.yarn.exceptions.ApplicationNotFoundException;
|
||||
import org.junit.After;
|
||||
import org.junit.Test;
|
||||
|
||||
public class TestRemoteAppChecker {
|
||||
|
||||
private RemoteAppChecker checker;
|
||||
|
||||
@After
|
||||
public void cleanup() {
|
||||
if (checker != null) {
|
||||
checker.stop();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates/initializes/starts a RemoteAppChecker with a spied
|
||||
* DummyYarnClientImpl.
|
||||
*
|
||||
* @return the spied DummyYarnClientImpl in the created AppChecker
|
||||
*/
|
||||
private YarnClient createCheckerWithMockedClient() {
|
||||
YarnClient client = spy(new DummyYarnClientImpl());
|
||||
checker = new RemoteAppChecker(client);
|
||||
checker.init(new Configuration());
|
||||
checker.start();
|
||||
return client;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testNonExistentApp() throws Exception {
|
||||
YarnClient client = createCheckerWithMockedClient();
|
||||
ApplicationId id = ApplicationId.newInstance(1, 1);
|
||||
|
||||
// test for null
|
||||
doReturn(null).when(client).getApplicationReport(id);
|
||||
assertFalse(checker.isApplicationActive(id));
|
||||
|
||||
// test for ApplicationNotFoundException
|
||||
doThrow(new ApplicationNotFoundException("Throw!")).when(client)
|
||||
.getApplicationReport(id);
|
||||
assertFalse(checker.isApplicationActive(id));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testRunningApp() throws Exception {
|
||||
YarnClient client = createCheckerWithMockedClient();
|
||||
ApplicationId id = ApplicationId.newInstance(1, 1);
|
||||
|
||||
// create a report and set the state to an active one
|
||||
ApplicationReport report = new ApplicationReportPBImpl();
|
||||
report.setYarnApplicationState(YarnApplicationState.ACCEPTED);
|
||||
doReturn(report).when(client).getApplicationReport(id);
|
||||
|
||||
assertTrue(checker.isApplicationActive(id));
|
||||
}
|
||||
|
||||
class DummyYarnClientImpl extends YarnClientImpl {
|
||||
@Override
|
||||
protected void serviceInit(Configuration conf) throws Exception {
|
||||
// do nothing
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void serviceStart() {
|
||||
// do nothing
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void serviceStop() {
|
||||
// do nothing
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -39,6 +39,7 @@
|
|||
<module>hadoop-yarn-server-nodemanager</module>
|
||||
<module>hadoop-yarn-server-web-proxy</module>
|
||||
<module>hadoop-yarn-server-resourcemanager</module>
|
||||
<module>hadoop-yarn-server-sharedcachemanager</module>
|
||||
<module>hadoop-yarn-server-tests</module>
|
||||
<module>hadoop-yarn-server-applicationhistoryservice</module>
|
||||
</modules>
|
||||
|
|
|
|||
Loading…
Reference in New Issue