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解决Hive与Elasticsearch共有库 guava 冲突 NoSuchMethodError

时间:2017-04-05 14:51:16      阅读:941      评论:0      收藏:0      [点我收藏+]

标签:oca   dir   arch   enable   transform   mode   pat   抽取   版本   

 

情况描述

  • 使用JDBC从Hive中抽取数据,所以maven项目中有hive依赖库;
  • 数据导入Elasticsearch,版本2.3.1其中guava库为18以上的版本
  • hive与ES的guava版本冲突
  • 现象:java.lang.NoSuchMethodError: com.google.common.util.concurrent.MoreExecutors.directExecutor()Ljava/util/concurrent/Executor;

解决方法

  • 将Elasticsearch中冲突库,进行改名,重新打包;
  • 在新项目中引入新打包的ES库

方法一:Shade and relocate

简介

  • 为了避免ES中库与其他依赖库的冲突,可以选择将ES依赖的冲突库relocate,并映射到新的名词,避免库覆盖。
  • 因为hadoop生产环境的更新并不方便,通过maven的shade插件,重新映射库版本更靠谱

Shade Elasticsearch

这一步将所依赖的ES库进行shade,创建一个新的maven项目,将依赖的Elasticsearch库依赖加入,并将冲突的库relocate,编译成新的jar

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>my.elasticsearch</groupId>
  <artifactId>es-shaded</artifactId>
  <version>1.0-SNAPSHOT</version>
    <properties>
        <elasticsearch.version>2.3.1</elasticsearch.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>${elasticsearch.version}</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.plugin</groupId>
            <artifactId>shield</artifactId>
            <version>${elasticsearch.version}</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.4.1</version>
                <configuration>
                    <createDependencyReducedPom>false</createDependencyReducedPom>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <relocations>
                                <relocation>
                                    <pattern>com.google.guava</pattern>
                                    <shadedPattern>my.elasticsearch.guava</shadedPattern>
                                </relocation>
                                <relocation>
                                    <pattern>org.joda</pattern>
                                    <shadedPattern>my.elasticsearch.joda</shadedPattern>
                                </relocation>
                                <relocation>
                                    <pattern>com.google.common</pattern>
                                    <shadedPattern>my.elasticsearch.common</shadedPattern>
                                </relocation>
                                <relocation>
                                    <pattern>com.google.thirdparty</pattern>
                                    <shadedPattern>my.elasticsearch.thirdparty</shadedPattern>
                                </relocation>
                            </relocations>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer" />
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <repositories>
        <repository>
            <id>elasticsearch-releases</id>
            <url>http://maven.elasticsearch.org/releases</url>
            <releases>
                <enabled>true</enabled>
                <updatePolicy>daily</updatePolicy>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
</project>

 

引入shade ES jar

在新的项目中引入上一步编译好的ES包

<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>${guava.version}</version>
</dependency>
<dependency>
    <groupId>my.elasticsearch</groupId>
    <artifactId>es-shaded</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

 

参考:https://www.elastic.co/blog/to-shade-or-not-to-shade

方法二:修改集群job库加载策略(未实验)

<property>
    <name>mapreduce.job.user.classpath.first</name>
    <value>true</value>
</property>
 

解决Hive与Elasticsearch共有库 guava 冲突 NoSuchMethodError

标签:oca   dir   arch   enable   transform   mode   pat   抽取   版本   

原文地址:http://www.cnblogs.com/bigbigtree/p/6668542.html

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