You must properly configure and enable Hive's Table Lock Manager. This requires installing ZooKeeper and setting up a ZooKeeper ensemble; see ZooKeeper Installation.

  Important:

Failure to do this will prevent HiveServer2 from handling concurrent query requests and may result in data corruption.

Enable the lock manager by setting properties in /etc/hive/conf/hive-site.xml as follows (substitute your actual ZooKeeper node names for those in the example):

<property>
  <name>hive.support.concurrency</name>
  <description>Enable Hive's Table Lock Manager Service</description>
  <value>true</value>
</property>

<property>
  <name>hive.zookeeper.quorum</name>
  <description>Zookeeper quorum used by Hive's Table Lock Manager</description>
  <value>zk1.myco.com,zk2.myco.com,zk3.myco.com</value>
</property>

  Important:

Enabling the Table Lock Manager without specifying a list of valid Zookeeper quorum nodes will result in unpredictable behavior. Make sure that both properties are properly configured.

If ZooKeeper is not using the default value for ClientPort, you need to set hive.zookeeper.client.port in /etc/hive/conf/hive-site.xml to the same value that ZooKeeper is using. Check /etc/zookeeper/conf/zoo.cfg to find the value for ClientPort. If ClientPort is set to any value other than 2181 (the default), set hive.zookeeper.client.port to the same value. For example, if ClientPort is set to 2222, set hive.zookeeper.client.port to 2222 as well:

<property>
  <name>hive.zookeeper.client.port</name>
  <value>2222</value>
  <description>
  The port at which the clients will connect.
  </description>
</property>

The connection URL format and the driver class are different for HiveServer2 and HiveServer1:

jdbc:hive2://<host>:<port>

org.apache.hive.jdbc.HiveDriver

jdbc:hive://<host>:<port>

org.apache.hadoop.hive.jdbc.HiveDriver

HiveServer2 can be configured to authenticate all connections; by default, it allows any client to connect. HiveServer2 supports either Kerberos or LDAP authentication; configure this in the hive.server2.authentication property in the hive-site.xml file. You can also configure Pluggable Authentication, which allows you to use a custom authentication provider for HiveServer2; and HiveServer2 Impersonation, which allows users to execute queries and access HDFS files as the connected user rather than the super user who started the HiveServer2 daemon. For more information, see Hive Security Configuration.