If you are stretched for space locally, this may come in handy. By default, localized resources are purged every ten minutes… [root@cmhlddlkedat01 2.2.4.2-2]# grep -A1 yarn.nodemanager.localizer.cache.cleanup.interval-ms yarn-default.xml yarn.nodemanager.localizer.cache.cleanup.interval-ms 600000 [root@cmhlddlkedat01 2.2.4.2-2]# Of course, this can be overridden.
This is just a simple example of using a custom JDBC class to connect to an HBase cluster that is secured by kerberos. import java.sql.*; import java.util.*; public class phoenixTest { public static void main(String args[]) throws Exception { Connection…
We ran into an issue that is not documented, although the hive user guide does indicate it should be set. Whenever we issued a statement with the Hive 64-bit ODBC driver through knox, the knox server would truncate anything after…
We had a need to authenticate user requests against AD in a kerberos enabled cluster, and allow “local” hive sessions to use only a keytab. Below are the examples of each. First, we show how to connect over a binary…
You will often hear of online and in store retailers in which credit card numbers are stolen. This is often due to storing the card numbers locally in an encrypted status. As soon as a hacker obtains the encrypted value,…
Download the most recent free version of DB Visualizer from the following URL: http://www.dbvis.com/ Execute the downloaded file. If you see the following, it means you have either not installed java, or the installer can’t find where you installed it.…