IllegalArgumentException：java.net.UnknownHostException：NNode

Question

我可以使用 DBeaver 连接位于不同虚拟机中的 hive 表。

当我尝试通过 pyspark 连接我的配置单元时，我能够查看模式中的所有表，但是当我尝试查询表时，我收到一条错误消息

IllegalArgumentException                  Traceback (most recent call last)
Cell In[7], line 1
----> 1 spark.sql("SELECT * FROM u1").show()

File C:\ProgramData\anaconda3\lib\site-packages\pyspark\sql\dataframe.py:959, in DataFrame.show(self, n, truncate, vertical)
    953     raise PySparkTypeError(
    954         error_class="NOT_BOOL",
    955         message_parameters={"arg_name": "vertical", "arg_type": type(vertical).__name__},
    956     )
    958 if isinstance(truncate, bool) and truncate:
--> 959     print(self._jdf.showString(n, 20, vertical))
    960 else:
    961     try:

File C:\ProgramData\anaconda3\lib\site-packages\py4j\java_gateway.py:1322, in JavaMember.__call__(self, *args)
   1316 command = proto.CALL_COMMAND_NAME +\
   1317     self.command_header +\
   1318     args_command +\
   1319     proto.END_COMMAND_PART
   1321 answer = self.gateway_client.send_command(command)
-> 1322 return_value = get_return_value(
   1323     answer, self.gateway_client, self.target_id, self.name)
   1325 for temp_arg in temp_args:
   1326     if hasattr(temp_arg, "_detach"):

File C:\ProgramData\anaconda3\lib\site-packages\pyspark\errors\exceptions\captured.py:185, in capture_sql_exception.<locals>.deco(*a, **kw)
    181 converted = convert_exception(e.java_exception)
    182 if not isinstance(converted, UnknownException):
    183     # Hide where the exception came from that shows a non-Pythonic
    184     # JVM exception message.
--> 185     raise converted from None
    186 else:
    187     raise

IllegalArgumentException: java.net.UnknownHostException: NNode

`

我在下面给出了 core-site.xml 和 hdfs-site.xml 供参考。

1.core-site.xml

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!--
  Licensed 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. See accompanying LICENSE file.
-->

<!-- Put site-specific property overrides in this file. -->

<configuration>
    <property>
        <name>fs.defaultFS</name>
        <value>hdfs://{NAME_NODE}:9000</value>
    </property>
    <property>
        <name>hadoop.proxyuser.hadoop.groups</name>
        <value>*</value>
    </property>
     <property>
                <name>hadoop.proxyuser.hadoop.hosts</name>
                <value>*</value>
        </property>
</configuration>

2.hdfs-site.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?><!--
  Licensed 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. See accompanying LICENSE file.
--><!-- Put site-specific property overrides in this file. --><configuration>
        
    <property>  
        <name>dfs.namenode.name.dir </name>             
        <value>file:///{NAME_NODE}/hdfs-data/name</value>           
    </property>     
    <property>              
        <name>dfs.namenode.acls.enabled</name>              
        <value>true</value>         
    </property>
    <property>          
        <name>dfs.namenode.http-address</name>              
        <value>webhdfs://{NAME_NODE}:9868</value>           
    </property>         
    <property>              
        <name>dfs.namenode.secondary.http-address </name>               
        <value>webhdfs://{SECONDARY_NAME_NODE}:9868</value>         
    </property>     
    <property>              
        <name>dfs.replication</name>                
        <value>2</value>        
    </property>     
    <property>              
        <name>dfs.blocksize</name>              
        <value>134217728</value>            
    </property>     
    <property>              
        <name>dfs.datanode.data.dir</name>              
        <value>file:///{NAME_NODE}/hdfs-data/data</value>           
    </property>    
    <property>                
        <name>dfs.permissions.enabled</name>                
        <value>true</value>           
    </property>       
    <property>                
        <name>dfs.permissions</name>                
        <value>true</value>           
    </property>        
    <property>                
        <name>dfs.namenode.inode.attributes.provider.class</name>               
        <value>org.apache.ranger.authorization.hadoop.RangerHdfsAuthorizer</value>            
    </property>       
    <property>                
        <name>dfs.permissions.ContentSummary.subAccess</name>                
        <value>true</value>            
    </property>    
</configuration>

这些文件放置在 C:\ProgramData naconda3\Lib\site-packages\pyspar 中