# tMapRDBClose

Closes an MapRDB connection you have established in a same Job.

This component is not shipped with your Talend Studio by default. You need to install it using the Feature Manager. For more information, see [Installing features using the Feature Manager](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/install-features-to-talend-studio).

## tMapRDBClose Standard properties

These properties are used to configure tMapRDBClose running in the Standard Job framework.

The Standard tMapRDBClose component belongs to the Big Data and the Databases NoSQL families.

The component in this framework is available in all Talend products with Big Data and in Talend Data Fabric.

## Basic settings

| Properties | Description |
| --- | --- |
| Component list | Select the tMapRDBConnection<br>component in the list if more than one connection are planned for<br>the current Job. |

## Advanced settings

| Properties | Description |
| --- | --- |
| tStat Catcher Statistics | Select this check box to collect log data at the component<br>level. |

## Global Variables

| Variables | Description |
| --- | --- |
| Global Variables | ERROR\_MESSAGE: the error message generated by the<br>component when an error occurs. This is an After variable and it returns a string. This<br>variable functions only if the Die on error checkbox is<br>cleared, if the component has this checkbox.<br><br>A Flow variable functions during the execution of a component<br>while an After variable functions after the execution of the component.<br><br>To fill up a field or expression with a variable, press Ctrl+Space to access the variable list and choose the variable to use from<br>it.<br><br>For more information about variables, see [Using contexts and variables](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/contexts-and-variables). |

## Usage

| Usage guidance | Description |
| --- | --- |
| **Usage rule** | This component is to be used along with MapRDB components, especially with tMapRDBConnection. |
| Prerequisites | Before starting, ensure that you have met the Loopback IP prerequisites expected by your<br>database.<br><br>The Hadoop distribution must be properly installed, so as to guarantee the interaction<br>with *Talend Studio*. The following list presents MapR related information for<br>example.<br><br><ul> <li> <p>Ensure that you have installed the MapR client in the machine where                  <span>Talend Studio</span> is,               and added the MapR client library to the PATH variable of that machine. According to               MapR's documentation, the library or libraries of a MapR client corresponding to each               OS version can be found under <em>MAPR_INSTALL\                  hadoop\hadoop-VERSION\lib\native</em>. For example, the library for Windows is <em>\lib\native\MapRClient.dll</em> in the MapR client jar file.</p> <p>Without adding the specified library or libraries, you may encounter the following				error: <span>no MapRClient in java.library.path</span>.</p> </li> <li> <p>Set the <span>-Djava.library.path</span> argument,               for example, in the <span>Job Run VM arguments</span> area               of the <span>Run/Debug</span> view in the <span>Preferences</span> dialog box in the <span>Window</span> menu. This argument provides to <span>Talend Studio</span> the               path to the native library of that MapR client. This allows the subscription-based               users to make full use of the <span>Data viewer</span> to               view locally in <span>Talend Studio</span> the               data stored in MapR.</p> </li> </ul><br><br>For further information about how to install a Hadoop distribution, see the manuals<br>corresponding to the Hadoop distribution you are using. |