freshness_c12

Author: dagiro

articles/hdinsight/hadoop/apache-hadoop-connect-hive-jdbc-driver.md

@@ -5,16 +5,16 @@ author: hrasheed-msft
 ms.author: hrasheed
 ms.reviewer: jasonh
 ms.service: hdinsight
-ms.custom: hdinsightactive,hdiseo17may2017
 ms.topic: conceptual
-ms.date: 02/17/2020
+ms.custom: hdinsightactive,hdiseo17may2017
+ms.date: 04/20/2020
 ---
 
 # Query Apache Hive through the JDBC driver in HDInsight
 
 [!INCLUDE [ODBC-JDBC-selector](../../../includes/hdinsight-selector-odbc-jdbc.md)]
 
-Learn how to use the JDBC driver from a Java application to submit Apache Hive queries to Apache Hadoop in Azure HDInsight. The information in this document demonstrates how to connect programmatically, and from the SQuirreL SQL client.
+Learn how to use the JDBC driver from a Java application. To submit Apache Hive queries to Apache Hadoop in Azure HDInsight. The information in this document demonstrates how to connect programmatically, and from the SQuirreL SQL client.
 
 For more information on the Hive JDBC Interface, see [HiveJDBCInterface](https://cwiki.apache.org/confluence/display/Hive/HiveJDBCInterface).
 
@@ -26,7 +26,7 @@ For more information on the Hive JDBC Interface, see [HiveJDBCInterface](https:/
 
 ## JDBC connection string
 
-JDBC connections to an HDInsight cluster on Azure are made over port 443, and the traffic is secured using TLS/SSL. The public gateway that the clusters sit behind redirects the traffic to the port that HiveServer2 is actually listening on. The following connection string shows the format to use for HDInsight:
+JDBC connections to an HDInsight cluster on Azure are made over port 443. The traffic is secured using TLS/SSL. The public gateway that the clusters sit behind redirects the traffic to the port that HiveServer2 is actually listening on. The following connection string shows the format to use for HDInsight:
 
     jdbc:hive2://CLUSTERNAME.azurehdinsight.net:443/default;transportMode=http;ssl=true;httpPath=/hive2
 
@@ -38,17 +38,17 @@ Or you can get the connection through **Ambari UI > Hive > Configs > Advanced**.
 
 ### Host name in connection string
 
-Host name 'CLUSTERNAME.azurehdinsight.net' in the connection string is the same as your cluster URL. You can get it through Azure portal. 
+Host name 'CLUSTERNAME.azurehdinsight.net' in the connection string is the same as your cluster URL. You can get it through Azure portal.
 
 ### Port in connection string
 
-You can only use **port 443** to connect to the cluster from some places outside of the Azure virtual network. HDInsight is a managed service, which means that all connections to the cluster are managed via a secure Gateway. You cannot connect to HiveServer 2 directly on ports 10001 or 10000 because these ports are not exposed to the outside. 
+You can only use **port 443** to connect to the cluster from some places outside of the Azure virtual network. HDInsight is a managed service, which means all connections to the cluster are managed via a secure Gateway. You can't connect to HiveServer 2 directly on ports 10001 or 10000. These ports aren't exposed to the outside.
 
 ## Authentication
 
-When establishing the connection, you must use the HDInsight cluster admin name and password to authenticate to the cluster gateway. When connecting from JDBC clients such as SQuirreL SQL, you must enter the admin name and password in client settings.
+When establishing the connection, use the HDInsight cluster admin name and password to authenticate. From JDBC clients such as SQuirreL SQL, enter admin name and password in client settings.
 
-From a Java application, you must use the name and password when establishing a connection. For example, the following Java code opens a new connection using the connection string, admin name, and password:
+From a Java application, you must use the name and password when establishing a connection. For example, the following Java code opens a new connection:
 
 ```java
 DriverManager.getConnection(connectionString,clusterAdmin,clusterPassword);
@@ -81,7 +81,7 @@ SQuirreL SQL is a JDBC client that can be used to remotely run Hive queries with
     |Property | Value |
     |---|---|
     |Name|Hive|
-    |Example URL|jdbc:hive2://localhost:443/default;transportMode=http;ssl=true;httpPath=/hive2|
+    |Example URL|`jdbc:hive2://localhost:443/default;transportMode=http;ssl=true;httpPath=/hive2`|
     |Extra Class Path|Use the **Add** button to add the all of jar files downloaded earlier.|
     |Class Name|org.apache.hive.jdbc.HiveDriver|
 
@@ -91,15 +91,15 @@ SQuirreL SQL is a JDBC client that can be used to remotely run Hive queries with
 
 6. On the left of the SQuirreL SQL window, select **Aliases**. Then select the **+** icon to create a connection alias.
 
-    ![SQuirreL SQL add new alias dialog](./media/apache-hadoop-connect-hive-jdbc-driver/hdinsight-new-aliases.png)
+    ![`SQuirreL SQL add new alias dialog`](./media/apache-hadoop-connect-hive-jdbc-driver/hdinsight-new-aliases.png)
 
 7. Use the following values for the **Add Alias** dialog:
 
     |Property |Value |
     |---|---|
     |Name|Hive on HDInsight|
     |Driver|Use the drop-down to select the **Hive** driver.|
-    |URL|jdbc:hive2://CLUSTERNAME.azurehdinsight.net:443/default;transportMode=http;ssl=true;httpPath=/hive2. Replace **CLUSTERNAME** with the name of your HDInsight cluster.|
+    |URL|`jdbc:hive2://CLUSTERNAME.azurehdinsight.net:443/default;transportMode=http;ssl=true;httpPath=/hive2`. Replace **CLUSTERNAME** with the name of your HDInsight cluster.|
     |User Name|The cluster login account name for your HDInsight cluster. The default is **admin**.|
     |Password|The password for the cluster login account.|
 
@@ -148,25 +148,20 @@ at java.util.concurrent.FutureTask.get(FutureTask.java:206)
 
 ### Connection disconnected by HDInsight
 
-**Symptoms**: When trying to download huge amount of data (say several GBs) through JDBC/ODBC, the connection is disconnected by HDInsight unexpectedly while downloading. 
+**Symptoms**: When trying to download huge amount of data (say several GBs) through JDBC/ODBC, the connection is disconnected by HDInsight unexpectedly while downloading.
 
-**Cause**: This error is caused by the limitation on Gateway nodes. When getting data from JDBC/ODBC, all data needs to pass through the Gateway node. However, a gateway is not designed to download a huge amount of data, so the connection might be closed by the Gateway if it cannot handle the traffic.
+**Cause**: This error is caused by the limitation on Gateway nodes. When getting data from JDBC/ODBC, all data needs to pass through the Gateway node. However, a gateway isn't designed to download a huge amount of data, so the Gateway might close the connection if it can't handle the traffic.
 
 **Resolution**: Avoid using JDBC/ODBC driver to download huge amounts of data. Copy data directly from blob storage instead.
 
-
 ## Next steps
 
 Now that you've learned how to use JDBC to work with Hive, use the following links to explore other ways to work with Azure HDInsight.
 
 * [Visualize Apache Hive data with Microsoft Power BI in Azure HDInsight](apache-hadoop-connect-hive-power-bi.md).
 * [Visualize Interactive Query Hive data with Power BI in Azure HDInsight](../interactive-query/apache-hadoop-connect-hive-power-bi-directquery.md).
-* [Use Apache Zeppelin to run Apache Hive queries in Azure HDInsight](../interactive-query/hdinsight-connect-hive-zeppelin.md).
 * [Connect Excel to HDInsight with the Microsoft Hive ODBC Driver](apache-hadoop-connect-excel-hive-odbc-driver.md).
 * [Connect Excel to Apache Hadoop by using Power Query](apache-hadoop-connect-excel-power-query.md).
-* [Connect to Azure HDInsight and run Apache Hive queries using Data Lake Tools for Visual Studio](apache-hadoop-visual-studio-tools-get-started.md).
-* [Use Azure HDInsight Tool for Visual Studio Code](../hdinsight-for-vscode.md).
-* [Upload data to HDInsight](../hdinsight-upload-data.md)
 * [Use Apache Hive with HDInsight](hdinsight-use-hive.md)
-* [Use Apache Pig with HDInsight](hdinsight-use-pig.md)
+* [Use Apache Pig with HDInsight](../use-pig.md)
 * [Use MapReduce jobs with HDInsight](hdinsight-use-mapreduce.md)