java hadoop api yarnclient没有“init()/start()”函数?

c9qzyr3d  于 2021-06-01  发布在  Hadoop
关注(0)|答案(1)|浏览(481)

我试过maven回购:

<dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-yarn-common</artifactId>
        <version>2.7.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-yarn-api -->
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-yarn-api</artifactId>
        <version>2.7.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-yarn-client -->
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-yarn-client</artifactId>
        <version>2.7.2</version>
    </dependency>

然后我的java代码:

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.api.ApplicationConstants;
import org.apache.hadoop.yarn.api.records.*;
import org.apache.hadoop.yarn.client.api.YarnClient;
import org.apache.hadoop.yarn.client.api.YarnClientApplication;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;

public static void main(String[] args) {
    YarnConfiguration yarnConfiguration = new YarnConfiguration();
    YarnClient yarnClient = YarnClient.createYarnClient();
    yarnClient.init(yarnConfiguration);
    yarnClient.start();
}

intellij ide显示“cannot solve method init”和“cannot solve method start”。
然后我尝试使用jar版本的3.1.1而不是“2.7.2”。同样的结果。那么我的代码出了什么问题,如何修复呢?

tag5nh1u

tag5nh1u1#

init和start方法派生自abstractservice类。您需要验证yarnclient和abstractservice的版本是否相同。
转到yarnclient并检查它所引用的jar,然后从yarn客户机中单击abstractservice父级并检查其版本。
根据abstractservice版本更改yarnclient版本。
我也有同样的问题,它对我有用。版本2.6.5。

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