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CData Sync

Replicate Multiple Hive Accounts

Replicate multiple Hive accounts to one or many databases.

CData Sync for Hive is a stand-alone application that provides solutions for a variety of replication scenarios such as replicating sandbox and production instances into your database. Both Sync for Windows and Sync for Java include a command-line interface (CLI) that makes it easy to manage multiple Hive connections. In this article we show how to use the CLI to replicate multiple Hive accounts.

Configure Hive Connections

You can save connection and email notification settings in an XML configuration file. To replicate multiple Hive accounts, use multiple configuration files. Below is an example configuration to replicate Hive to SQLite:


<?xml version="1.0" encoding="UTF-8" ?> <CDataSync> <DatabaseType>SQLite</DatabaseType> <DatabaseProvider>System.Data.SQLite</DatabaseProvider> <ConnectionString>Server=;Port=10000;TransportMode=BINARY;</ConnectionString> <ReplicateAll>False</ReplicateAll> <NotificationUserName></NotificationUserName> <DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString> <TaskSchedulerStartTime>09:51</TaskSchedulerStartTime> <TaskSchedulerInterval>Never</TaskSchedulerInterval> </CDataSync>


<?xml version="1.0" encoding="UTF-8" ?> <CDataSync> <DatabaseType>SQLite</DatabaseType> <DatabaseProvider>org.sqlite.JDBC</DatabaseProvider> <ConnectionString>Server=;Port=10000;TransportMode=BINARY;</ConnectionString> <ReplicateAll>False</ReplicateAll> <NotificationUserName></NotificationUserName> <DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString> </CDataSync> Set the Server, Port, TransportMode, and AuthScheme connection properties to connect to Hive.

Configure Queries for Each Hive Instance

Sync enables you to control replication with standard SQL. The REPLICATE statement is a high-level command that caches and maintains a table in your database. You can define any SELECT query supported by the Hive API. The statement below caches and incrementally updates a table of Hive data:

REPLICATE Customers;

You can specify a file containing the replication queries you want to use to update a particular database. Separate replication statements with semicolons. The following options are useful if you are replicating multiple Hive accounts into the same database:

You can use a different table prefix in the REPLICATE SELECT statement:


Alternatively, you can use a different schema:


Run Sync

After you have configured the connection strings and replication queries, you can run Sync with the following command-line options:


ApacheHiveSync.exe -g MyProductionApacheHiveConfig.xml -f MyProductionApacheHiveSync.sql


java -Xbootclasspath/p:c:\sqlitejdbc.jar -jar ApacheHiveSync.jar -g MyProductionApacheHiveConfig.xml -f MyProductionApacheHiveSync.sql