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下面是我的 hive/conf/hive-site.xml：

<configuration>
   <property>
      <name>javax.jdo.option.ConnectionURL</name>
      <value>jdbc:mysql://127.0.0.1/metastore?createDatabaseIfNotExist=true</value>
      <description>metadata is stored in a MySQL server</description>
   </property>
   <property>
      <name>javax.jdo.option.ConnectionDriverName</name>
      <value>com.mysql.jdbc.Driver</value>
      <description>MySQL JDBC driver class</description>
   </property>
   <property>
      <name>javax.jdo.option.ConnectionUserName</name>
      <value>hiveuser</value>
      <description>user name for connecting to mysql server</description>
   </property>
   <property>
      <name>javax.jdo.option.ConnectionPassword</name>\
      <value>hivepassword</value>
      <description>password for connecting to mysql server</description>
   </property>
</configuration>

我想使用 spark-HiveContext 访问 Hive 现有数据库和表。因此在 hive/conf/hive-site.xml 中添加以下行：

<configuration>
   <property>
      <name>javax.jdo.option.ConnectionURL</name>
      <value>jdbc:mysql://127.0.0.1/metastore?createDatabaseIfNotExist=true</value>
      <description>metadata is stored in a MySQL server</description>
   </property>
   <property>
      <name>javax.jdo.option.ConnectionDriverName</name>
      <value>com.mysql.jdbc.Driver</value>
      <description>MySQL JDBC driver class</description>
   </property>
   <property>
      <name>javax.jdo.option.ConnectionUserName</name>
      <value>hiveuser</value>
      <description>user name for connecting to mysql server</description>
   </property>
   <property>
      <name>javax.jdo.option.ConnectionPassword</name>\
      <value>hivepassword</value>
      <description>password for connecting to mysql server</description>
   </property>
   <property>
      <name>hive.metastore.uris</name>
      <value>thrift://127.0.0.1:9083</value>
   </property>
</configuration>

如上所示编辑 hive-site.xml 后，hive shell 不起作用。请帮助我正确更新 hive-site.xml 并帮助我使用 HiveContext 访问 spark-shell 上的配置单元表，如下所示：

val hc = new org.apache.spark.sql.hive.HiveContext(sc);
hc.setConf("hive.metastore.uris","thrift://127.0.0.1:9083");
val a = hc.sql("show databases");
a.show //should display all my hive databases.

请在这个问题上帮助我。

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1 回答 1

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@Chaithu您需要使用 hive --service metastore 启动您的配置单元元存储，然后以这种方式创建启用了 hivesupport 的 sparksession

 val spark= SparkSession
  .builder()
  .master("local")
  .appName("HiveExample").config("hive.metastore.uris","thrift://hadoop-master:9083")
  .enableHiveSupport()
  .getOrCreate()
于 2017-11-23T11:28:33.727 回答