java - GCS Hadoop 连接器错误 : ClassNotFoundException: com. google.api.client.http.HttpRequestInitializer ls:方案 gs 没有文件系统

Question

我正在尝试设置 hadoop-connectors在我的本地 Ubuntu 20.04 上运行测试命令 hadoop fs -ls gs://my-bucket但我不断收到如下错误:

$ hadoop fs -ls gs://my-bucket
2020-08-22 03:29:06,976 WARN fs.FileSystem: Cannot load filesystem: java.util.ServiceConfigurationError: org.apache.hadoop.fs.FileSystem: com.google.cloud.hadoop.fs.gcs.GoogleHadoopFileSystem Unable to get public no-arg constructor
2020-08-22 03:29:06,977 WARN fs.FileSystem: java.lang.NoClassDefFoundError: com/google/api/client/http/HttpRequestInitializer
2020-08-22 03:29:06,977 WARN fs.FileSystem: java.lang.ClassNotFoundException: com.google.api.client.http.HttpRequestInitializer
ls: No FileSystem for scheme "gs"

请注意，我可以使用 gsutil ls gs://my-bucket 访问存储桶.
我已经下载了gcs-connector-hadoop3-latest.jar来自 here并将其放入 /usr/local/hadoop/share/hadoop/common/lib .我希望这是这个 jar 文件的正确位置？
我已经配置了core-site.xml列出的属性here并设置GOOGLE_APPLICATION_CREDENTIALS到我的服务帐户 key 文件。在 hadoop-env.sh我已经导出

export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64/ 
export HADOOP_CLASSPATH+="$HADOOP_CLASSPATH:$HADOOP_HOME/share/hadoop/common/lib/*.jar:$HADOOP_HOME/lib/*.jar"

不确定我是否设置了 HADOOP_CLASSPATH正确，如果 hadoop识别 /usr/local/hadoop/share/hadoop/common/lib 中的 jar 文件?和 /usr/local/hadoop/lib 有什么区别？ ?
这里是core-site.xml的相关内容:

<configuration>
<property>
  <name>fs.AbstractFileSystem.gs.impl</name>
  <value>com.google.cloud.hadoop.fs.gcs.GoogleHadoopFS</value>
  <description>The AbstractFileSystem for gs: uris.</description>
</property>
<property>
  <name>fs.gs.project.id</name>
  <value>my-project-id</value>
  <description>
    Optional. Google Cloud Project ID with access to GCS buckets.
    Required only for list buckets and create bucket operations.
  </description>
</property>
<property>
  <name>google.cloud.auth.service.account.enable</name>
  <value>true</value>
  <description>
    Whether to use a service account for GCS authorization.
    Setting this property to `false` will disable use of service accounts for
    authentication.
  </description>
</property>
<property>
  <name>google.cloud.auth.service.account.json.keyfile</name>
  <value>/path/to/service-account.json</value>
  <description>
    The JSON key file of the service account used for GCS
    access when google.cloud.auth.service.account.enable is true.
  </description>
</property>
</configuration>

$ java --version
openjdk 11.0.8 2020-07-14
OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu120.04)
OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Ubuntu-0ubuntu120.04, mixed mode, sharing)

$ hadoop version
Hadoop 3.3.0
Source code repository https://gitbox.apache.org/repos/asf/hadoop.git -r aa96f1871bfd858f9bac59cf2a81ec470da649af
Compiled by brahma on 2020-07-06T18:44Z
Compiled with protoc 3.7.1
From source with checksum 5dc29b802d6ccd77b262ef9d04d19c4
This command was run using /usr/local/hadoop/share/hadoop/common/hadoop-common-3.3.0.jar

.bashrc:

...

export PDSH_RCMD_TYPE=ssh

export HADOOP_HOME="/usr/local/hadoop"
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin
export HADOOP_MAPRED_HOME=${HADOOP_HOME}
export HADOOP_COMMON_HOME=${HADOOP_HOME}
export HADOOP_HDFS_HOME=${HADOOP_HOME}
export YARN_HOME=${HADOOP_HOME}

Answer 1

似乎重新启动有助于解决问题。重启后命令hadoop fs -ls gs://my-bucket按预期工作并列出存储桶的内容。
感谢@IgorDvorzhak 提供命令:hadoop classpath --glob检查 gcs-connector-hadoop3-latest.jar能够被找到的。我用了:

hadoop classpath --glob | grep gcs-connector