无法通过更改Hive Site.xml来与Spark-HiveContext连接

Question

以下是我的蜂巢/conf/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，将下面添加到Hive/conf/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>
   <property>
      <name>hive.metastore.uris</name>
      <value>thrift://127.0.0.1:9083</value>
   </property>
</configuration>

在编辑Hive-site.xml之后，如上图所示，蜂巢壳不起作用。请帮助我更新hive-site.xml正确的方法，并帮助我使用hivecontext在Spark-Shell上访问Hive Tables，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。

Answer 1

@chaithu您需要使用Hive -Service Metastore启动Hive Metastore，然后以这种方式启用使用Hivesupport的Sparksession

 val spark= SparkSession
  .builder()
  .master("local")
  .appName("HiveExample").config("hive.metastore.uris","thrift://hadoop-master:9083")
  .enableHiveSupport()
  .getOrCreate()